Mark the letter A, B, C, or D to indicate the correct response to each of the following exchanges.Câu hỏi John: "Has Mark completed his assignment yet, Mary?" -Mary: "_____________" A. He has, indeed. He still hasn't completed it. B. No, he hasn't. He's excessively industrious. C. No, he hasn't, despite doing well in school. D. No, due to his condition, he hasn't.