Which of the following is a true statement regarding the Chinese Civil War?
A. Jiang Jieshi's Nationalist Army was more experienced in guerilla warfare.
B. Jiang Jieshi's Nationalist Army received most of its aid from the Soviet Union.
C. Mao's Red Army was strong due to public support for Mao's proposed land reform.
D. Mao's Red Army was weakened by corrupt and ineffective leadership.