898. Unlike that of human beings, who waste away when they go without food for long periods, hibernating bears exist for months on only their excess fat.

(A) Unlike that of human beings, who waste away when they go

(B) Unlike human beings, who waste away when they go

(C) Unlike human beings, wasting away when going

(D) Dissimilar to human beings, wasting away when（B）

(E) Lacking similarity to human beings, who waste away when

这个题目看了NN们的讨论还是迷糊，好像it/its,they/their指代不一直的题目还不止这一题。请NN给解释解释，谢谢。

我觉得不能片面强调同一个句子中，they 和their不能指代不同的对象，主要应从逻辑意思上考虑。

比如本句，Unlike human beings, who waste away when they go without food for long periods, 与hibernating bears exist for months on only their excess fat.从逻辑意思上相当于独立的两个句子的。