Forum:DLC 4 Main element weakness

What is the main elemental weakness of DLC 4 be? Personally my money is on Electric for two reasons, 1 Fire (Zombie Island) and Corrosive ( Knoxx) have already been used and explosive isnt really strong to anything in paticular secondlly the Clap traps are robots so might be short circuited my electric, they will probabally still be weak to corrosive a little though so the pearl smg (cant remember the name) might be a good weapon for this DLC in my thoughts