President Harry Truman relieved General Douglas MacArthur from command of United Nations troops in Korea when
A) MacArthur continued to lose crucial battles.
B) MacArthur crossed the 38th parallel and entered North Korea.
C) the Chinese entered the Korean War after MacArthur said they would not.
D) MacArthur began to take issue publicly with presidential policies.
E) MacArthur began to mock Truman for being only a captain in the army.