GMAT Sentence Correction (SC) | Re: The man was always aware, sometimes proudly and sometimes

The man was always aware, sometimes proudly and sometimes resentfully, that he was a small-town Midwesternerwho 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