A、6:00. B、5:00. C、4:00. D、3:00. C女士询问男士四点见面去听演讲如何，男士说没问题，只要女士方便即可。由此推断，他们将会在四点见面。

W: Tony, would you like to go swimming with us?
M: Thanks, but it is the last thing I would like to do.
Q: What does the man mean?

W: Shall we meet at 4:00 for the lecture?
M: OK. As long as it is convenient for you.
Q: When will they meet for the lecture?