President Harry Truman Relieved General Douglas MacArthur from Command of United

President Harry Truman relieved General Douglas MacArthur from command of United Nations troops in Korea when

A) MacArthur continued to lose crucial battles against China and North Korea.
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's open insubordination and criticism of Truman's orders on military policy in Korea prompted his firing by the president.
E) MacArthur demonstrated he had lost the trust, morale, and support of U.N. troops under his command in Korea.