How were the Soviet satellite nations a response to Western capitalism?

a. They were used to ensure the Soviets could launch more TV satellites into space.

b. They were meant to be a protective barrier for the Soviet Union which saw capitalism and communism as incompatible.

c. They were a way for the Soviets to push back against the containment policy the American were implementing.

d. They were a way to conceal the Soviet Union from American spy planes.