Mark the letter A, B, C or D to indicate the sentence that is best written from the words/phrases given.Câu hỏi study/ hard/ that/parents/ proud/ her. A. She studies so hard that her parents are proud of her. B. She so studies hard her parents are proud of her. C. She hard studies so that her parents are proud of her. D. She studies hard so that her parents are proud of her.