Mark the letter A, B, C or D to indicate the sentence that best combines the following pairs of sentences.Câu hỏi "The student is very hard-working. The teacher praised her." A. The student who the teacher praised is very hard-working. B. The student whom the teacher praised is very hard-working. C. The student which the teacher praised is very hard-working. D. The student whose the teacher praised is very hard-working.