20. Byron possessed powers of observation that would have made him a great anthropologist and that makes his letters as a group the rival of the best novels of the time.
(A) makes his letters as a group the rival of
(B) makes his letters as a group one to rival
(C) makes his letters a group rivaling
(D) make his letters as a group the rival of（D）
(E) make his letters a group which is the rival of
The answer is D. But I think the anwer is WRONG, because E looks more parallel.
"make his letters a group " in E is parallel with "have made him a great anthropologist ", right? | 
