China Proper (where both the Shang and Zhou Dynasties settled) is the area located
a. between the Qin Ling and the Gobi Desert
b. between the Himalayas and the Kunlun Shan
C. between the Huang He (Yellow River) and the Chang Jiang (Yangtze River)
d. between the Plateau of Tibet and the Takla Makan Desert