语法大全777题,why not C?

请教一个问题:

语法大全777题,why not C?

777.The man was always aware, sometimes proudly and sometimes resentfully, that he was a small-town Midwesterner who was thrust into a world that was dominated by wealthier, better-educated, and more polished people than him.
(A) who was thrust into a world that was dominated by wealthier, better-educated, and more polished people than him
(B) who had been thrust into a world that was dominated by more wealthy, educated, and polished people than him
(C) who had been thrust into a world dominated by wealthier, better-educated, and people more polished than he was
(D) thrust into a world dominated by more wealthy, educated, and polished people than him
(E) thrust into a world dominated by wealthier, better-educated, and more polished people than he
the key:E

谢谢啊!~

thanks a lot.

1,出于简洁原则，定语从句中的主语和be动词尽可能省略，

2,如果未经省略的定语从句和ed分词定语所表达意思没有差别，优先使用ed分词做定语。

很多SC题目都有这个语法现象。