143. Recently discovered fossil remains strongly suggest that the Australian egg-laying mammals of today are a
branch of the main stem of mammalian evolution rather than developing independently from a common
ancestor of mammals more than 220 million years ago.
(A) rather than developing independently from
(B) rather than a type that developed independently from
(C) rather than a type whose development was independent of
(D) instead of developing independently from
(E) instead of a development that was independent of

C选项为什么不选。。。

答案说是：In C, the expression a type whose development was independent of a common ancestor states the opposite of the original point_that the type of mammal mentioned was thought to have developed independently of the main stem of mammalian evolution, but still to have descended from a common ancestor.

这段话什么意思，看不懂。。。

不理解你这句话的意思

be independent of 和 independent from 有区别阿？

thanks

你没把结构看清楚

(B) rather than a type that developed independently from
这个里面是developed from

(C) rather than a type whose development was independent of
这个里面是independent of