求教prep2 138，关于句子结构的问题

iwillmissyouso

138 A middleweight black hole weighs in at roughly 500 solar masses, hundreds of times more massive than the lightweight black holes produced by the collapse of individual stars, but thousands or even millions of times less in its mass as the heavyweight giants that lurk in the centers of galaxies.

(A) thousands or even millions of times less in its mass as

(B) it is thousands or even millions of times less massive as

(C) thousands or even millions of times less massive than

(D) yet it is thousands or even millions times less massive than

(E) yet it is thousands or even millions of times less in its mass than

答案C

但是这样岂不是前面一个完整的句子，but后面连接一个同位语从句？

tuscan

一看就是C,完美的平行结构 hundreds of times more massive than / thousands or even millions of times less massive than

coocooper

不是啊，这个整个是一个完整的句子，一个东西两个对比并列，非常完整的对比并列啊