Why did the U.S. want to contain communism?

a.
They were afraid the spread of communism would lead to tyranny and oppression across the world.

b.
They knew that communism would not survive if it spread further than where it was.

c.
They knew that people would reject communism if it left the Soviet Union since people hated it.

d.
They wanted to ensure that communism stayed put since it was going to fail anyway.