请教一道题~

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

答案选E，不明白为什么不用被动语态“was thrust...”

过去分词做后置定语