How Was the Nuclear Arms Race Between the United States

Multiple Choice

How was the nuclear arms race between the United States and the Soviet Union analogous to the Prisoner's Dilemma?

A) Both sides ended up with fewer weapons than they wanted but still had enough to defend themselves from the other.
B) Each side kept quiet about the number of nuclear weapons it had,so that it could more easily defect.
C) Both sides provided evidence of nuclear weapons and cooperated in creating an arms agreement.
D) The United States provided evidence of nuclear weapons,while the Soviet Union remained quiet and thus defected instead of cooperating.
E) Collectively each side would have been better off if both had fewer weapons,but each side had an incentive to defect.