大全526的疑惑

1.        Neanderthals had a vocal tract that resembled those of the apes and so were probably without language, a shortcoming that may explain why they were supplanted by our own species.

(A) Neanderthals had a vocal tract that resembled those of the apes

(B) Neanderthals had a vocal tract resembling an ape’s

(C) The vocal tracts of Neanderthals resembled an ape’s

(D) The Neanderthal’s vocal tracts resembled the apes’（B）

(E) The vocal tracts of the Neanderthals resembled those of the apes

不理解为什么用Neanderthals 和an ape做比较，不会有parallelism的问题吗?