16. Los Angeles has a higher number of family dwellings per capita than any large city.

(A) a higher number of family dwellings per capita than any large city

(B) higher numbers of family dwellings per capita than any other large city

(C) a higher number of family dwellings per capita than does any other large city

(D) higher numbers of family dwellings per capita than do other large cities（C）

(E) a high per capita number of family dwellings, more than does any other large city

通过比较范围的判断，很快可以排除A,D; 简洁原则排除E；但是在B,C中间我犹豫了蛮久，一直以为在这样的比较中如果前后比较对象的动词相同，后一个动词是可以省略的啊，而且 a number of family这个number也可以比较？B为什么不对呢？