Mark the letter A, B, C or D to indicate the sentence that is best written from the words/ phrases given. Câu hỏi The doctor / met / yesterday / work / Bach Mai hospital. A. The doctor which met him yesterday works at Bach Mai hospital. B. The doctor whom you met yesterday works at Bach Mai hospital. C. The doctor, that you met yesterday works at Bach Mai hospital. D. The doctor who you met him yesterday works at Bach Mai hospital.