听力原文：W: Hi, Jack. It's good to see you again. Are you ready to get down to business again after spring break？
M: Not really, but I guess I don't really have too much choice, do I？ And it's going to be particularly hard to get back to work since I just had the most fantastic vacation ever.
W: Really？ What did you do？
M: I went boating on the Klamath River？
W: Is that so interesting？
M: Yeah. The boat is quite long and narrow, used to be used by the Indians. Controlling it is not easy.
W: Weren't you scared？
M: At first, I was. But after I learned some techniques for controlling it, it wasn't so bad. We didn't start out on the river. We had three whole days of instruction in a shallow pool first. Then, when we finally got out on the river, I felt ready for it.
W: Did you spend the nights camping outside on the ground？ That alone would make the trip unappealing to me.
M: Oh, no. The accommodations were fantastic. Each person on the trip had a private cabin, and the facilities are good. The food is also good.
W: Now, that part of the trip does sound good to me. But I don't think I'd like the part that involves riding through rough water in a small boat.
M: Oh, you should try it; I know you'd like it. I'm going to do it again myself, as soon as I can afford to spend the time and the money.
When does the conversation probably take place？

A. Just before a vacation.
B. Just after the end of a school semester.
C. At the end of the summer.
D. Just after a break from school.