Which statement describes korea after world war ii?

a.
soviet troops occupied north korea, and american troops occupied south korea; in 1948 north korea formed a communist government, and south korea formed a republic.

b.
the soviet union built launch sites for missiles there, and had set up a puppet government in the entire country.

c.
american troops occupied north korea, and soviet troops occupied south korea; in 1948 south korea formed a communist government, and north korea formed a republic.

d.
a wall was constructed to separate north korea from south korea, which separated the communist part of korea from the democratic part of korea.