Which statements about the Cold War are true? Choose all answers that are correct. (multiple choice answer)

a. East Germany became an American ally during the Cold War, while West Germany aligned itself with the Soviet Union.

b. The United States and the Soviet Union were suspicious and mistrustful of each other.

c. The United States sent aid to countries that were at risk of falling to communism.

d. Berlin, the former German capital, was divided among France, Great Britain, the United States, and the Soviet Union.