Deterrence Theory Developed During the Cold War Remains Relevant Because

Deterrence theory developed during the Cold War remains relevant because

A) we need to keep our guard up in the event a communist regime returns to power in the Russian Federation.
B) there is no other theory that adequately explains mutually assured destruction.
C) it helps explain or predict the actions of new nuclear (or potentially nuclear) weapons countries.
D) nuclear weapons are the weapon of choice of most major countries.