Why Did the Eisenhower Administration Embrace the Doctrine of "Massive

Why did the Eisenhower administration embrace the doctrine of "massive retaliation"?

A) The doctrine provided Eisenhower with the necessary flexibility to fight communism in Central American and Southeast Asia.
B) The doctrine prevented not only large but small, military conflicts as well.
C) The constant threat of mutually assured destruction under the doctrine made for more cautious diplomacy.
D) The doctrine reduced national anxiety over the threat of nuclear annihilation.
E) As a man with mostly military experience, he did not know how else to address the Cold War crisis.