下列关于北方地区和南方地区的叙述中，错误的是[ ]

A．南方地区面积比北方地区大，但人口都没北方地区多

B．北方地区以“黑土地”和“黄土地”著称，长江以南的丘陵多红壤，平原地区为“水稻土”

C．北方地区煤炭、石油丰富，南方地区水能、有色金属丰富

D．北方地区居民主食为面食，南方地区居民以米饭为主

He had studied Japanese for two years before he _____ English. [ ]

A. took over

B. took up

C. took on

D. took off