​Why Was the So-Called Pax Sovietica Accepted by the West

​Why was the so-called Pax Sovietica accepted by the West?

A) ​The Warsaw Pact was a counterbalance to NATO.
B) ​The Soviets developed the atomic weapon in 1949.
C) ​The Soviet policy of peaceful coexistence brought peace.
D) ​The West was more interested in economic competition.
E) ​The aggressive phase of communism ended with Stalin's death.