请教一个语法的题目

bni

Some scientists contend that many species of dinosaur had a metabolism more like a warm-blooded mammal’s than a cold-blooded reptile’s.

A、that many species of dinosaur had a metabolism more like
B、that the metabolism of many dinosaur species were more like
C、that the metabolisms of many species of dinosaurs were more like those of
D、there were many species of dinosaurs that had metabolisms more like those of
E、there were many dinosaur species that had a metabolism more like that of


请问这个句子划线部分，怎么判断？
涉及比较平行吗？

fuckoffand

選b?

CDE的 those of/that of 於後面's 重複

另外比較的主語應該是"metabolism" instead of "species of dinosaur"