Mark the letter A, B, C or D to indicate the sentence that is closest in meaning to the original one.Câu hỏi "Can you help me with this exercise?", my brother asked. A. A. My brother asked me whether he could help me with that exercise. B. B. My brother asked me whether I can help him with this exercise. C. C. My brother asked me if you can help me with this exercise. D. D My brother asked me if I could help him with that exercise .