Gorbachev Launched a Dramatic New Foreign Policy of Détente and Arms

Gorbachev launched a dramatic new foreign policy of détente and arms reduction because

A) he needed to relieve the intolerable military burden on the Soviet economy.
B) he repudiated ideological struggle in favor of "universal human interests."
C) he wished to fool the west into believing that he had abandoned old Soviet policies of expansionism.
D) A and B