Many investors base their choice between bonds and stocks on comparing bond yields to the dividends available on common stocks.

(A) between bonds and stocks on comparing bond yields to

(B) among bonds and stocks on comparisons of bond yields to

(C) between bonds and stocks on comparisons of bond yields with

(D) among bonds and stocks on comparing bond yields and（C）

(E) between bonds and stocks on comparing bond yields with

the choice is C ,but why not E ?I think "comaring "is more concise than "comparisons of "

强调的是比较的结果而不是比较动作本身， 只有名次能表示结果