听力题

What does the man mean?

【正确答案】 B
【答案解析】

【听力原文及译文】
W: Could you help us carry these boxes, sir?
先生,您能帮我们搬箱子么?
M: Oh, I would like to help you, but I’ve got a pain in my back.
我也想帮你们,但是我背疼。