A、Business associates, B、Boss and secretary. C、Teacher and student. D、Good friends. A综合推断题。男士说很高兴在一起工作，希望能再次合作，女士对此表示赞同，由此推断，两人是

M: The bag is $18 now.
W: Yes, it’s exactly a half more than it was two months ago.
Q: What was the price of the bag two months ago?

M: Nice working with you. I hope we can do business again.
W: Yes, I would like that.
Q: What is the relationshi!0 between the two speakers?