单项选择题
A.9,4,8,11,10,3,6,2,12,5,7 B.6,3,2,10,11,8,4,12,9,5,7 C.7,9,8,4,5,12,3,10,2,11,6 D.7,5,12,2,6,3,10,11,8,4,9
A.15.4亿千瓦时 B.16.9亿千瓦时 C.20.8亿千瓦时 D.大于20.8亿千瓦时