Which of the Following Prompted the National Security Council to Adopt

Multiple Choice

Which of the following prompted the National Security Council to adopt NSC-68 as official U.S. policy in 1950?

A) The nullification of the Open Door Policy by China
B) The secret pact between China and the Soviet Union
C) The "long telegram" written by George Kennan from the Soviet Union
D) The accelerating growth of communism in China
E) The invasion of South Korea by communist North Korea