The Chinese Became Involved in the Korean War Because

The Chinese became involved in the Korean War because

A) they feared that South Korea was planning an assault on China after defeating North Korea.
B) they believed American-backed South Korea would destroy North Korea, a Chinese ally.
C) the Soviet Union threatened to withdraw aid, unless China came to the aid of North Korea.
D) they felt that America was planning an assault on China as well.
E) they feared that North Korea would turn to the Soviet Union for aid and alliance.