A、Husband and wife. B、Classmates. C、A teacher and his students. D、Colleagues. AWhat’s the relationship between the two speakers?

W: Hi, Bill. I haven’t seen a film for half a year. Do you have some free time to go to the cinema with me this weekend?
M: Sure. But I don’t have any information about the recent films. What about you?
W: Well, my workmate tells me that "Harry Porter and His Magic Stone" will be on:
M: What’s that?
W: I don’t know. It is said that kids like it a lot.
M: Perhaps you can take our son here. It’s boring for me to sit there for two hours.
W: Oh, you’re that kind of man. Um, a violent film called "The Most wanted" will also be on at the same time. Maybe you can come with us.
M: That’s a clever idea. I like American films very much. We can go to the same cinema and come home together, but watch different films.