Script chooses to select a random generator and ignores the other one?

So I made a script that makes a rarity chooser here it is, problem is at the bottom:

                      --LOCALS--
                      local Player = game.Players.LocalPlayer
                            local Selector = math.random(1,6)
                         print(Selector)
                    --NUMBERS BETWEEN--
                    local A = math.random(70,100)--Common
                    local B = math.random(40,69)--Uncommon
                    local C2 = math.random(10,39)--Rare
                    local D = math.random(3,9)--Epic
                    local E2 = math.random(1,2.9)--Light
                    local F = math.random(0.1,0.9)--Shadow
                    print(A, B, C2, D, E2, F)

                 --NAMES--
                 local C = "Common"
                 local UC = "Uncommon"
                 local R = "Rare"
                 local E = "Epic"
                 local L = "Light"
                 local S = "Shadow"

                  --RARITIES--PERCENTAGE

                  Common = 70
                  Uncommon = 40
                  Rare = 10
                  Epic = 3
                  Light = 1
                  Shadow = 0.1

                  local Rarities = math.random(Shadow, Common)


                  print(Rarities)


                  --PRICES--
                  local Common2 = 1000
                  local Uncommon2 = 1750
                  local Rare2 = 4000
                  local Epic2 = 10000
                  local Light2 = 100000
                  local Shadow2 = 500000


                 --SCRIPT--


                  --COMMON--
                  if Selector == 1 then
                  if Rarities == Common or A then
                  	print(C)	
                  	Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Common2

                  end
                  end


                  --UNCOMMON--
                  if Selector == 2 then
                  if Rarities ==Uncommon or B then
                   	print(UC)
                  	Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Uncommon2
                  end
                  end


                  --RARE--
                  if Selector == 3 then
                  if Rarities ==Rare or C2 then
                  	 print(R)
                 	 Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Rare2
                  end
                  end


                  --EPIC--
                  if Selector == 4 then
                  if Rarities ==Epic or D then
                 	 print(E)
                  	 Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Epic2
                  end
                  end

                  --LIGHT--
                  if Selector == 5 then
                  if Rarities ==Light or E2 then
                 	 print(L)
                 	 Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Light2
                  end
                  end


                  --SHADOW--
                  if Selector == 6 then
                  if Rarities == Shadow or F then
                      print(S)
                      Player.leaderstats.Gold.Value = Player.leaderstats.Gold.Value + Shadow2
                  end	
                  end

the problem is when the selector gets a number and the rarity's number are different, the script chooses the Selector and it adds the rarity's value to the Gold example..

Selector = 6 Which is Shadow Rarities = 50 which is Uncommon

The script will choose to add the shadow's value instead of being nil Any Ideas?