Having so many weapons that both sides would be totally destroyed in an all-out war

A) Total War

B) Mutually Assured

Destruction

C) Super Annihilation

D) Hardcore Team Deathmatch

The answer is A) Total war.

B) Mutually Assured Destruction

Explanation:

If one side uses their weapons on the other, they would destroy the other side. However, they would also destroy themselves because the other side would destroy them with their weapons. Basically, instant karma.