Why Was the National Security Act of 1947 Significant

Why was the National Security Act of 1947 significant?

A) It discontinued the Joint Chiefs of Staff, thereby making it more difficult for leaders of different American military branches to communicate.
B) It created the North Atlantic Treaty Organization to address deteriorating alliances among Western European nations.
C) It centralized control of the military establishment in the United States and formed institutions such as the Central Intelligence Agency.
D) It provided $13 billion to American World War II veterans to use for costs such as medical treatment and education.
E) It banned strikes by labor unions and lowered all wages and prices in the years after World War II.