The policy of containment

A) was based on the idea that once the expansion of communism stopped, the system would eventually collapse on its own.
B) was initiated after the 2001 attacks on the World Trade Center and Pentagon.
C) was abandoned after it was proved to be unsuccessful.
D) arose at a time when most Americans did not support an active foreign policy.
E) was the subject of contentious debates between Democrats and Republicans.

A