A、Because he can dress casually. B、Because he hates his present job. C、Because he doesn’t have smart suits. D、Because he doesn’t

W: So, you’ll be getting dressed up later—before you go to the BBC television studios.
M: Yes, but to tell you the truth, Mary, I prefer working in radio.
W: You prefer radio?
M: That’ s right. You can dress down in a radio studio.
W: What do you mean?
M: You can dress down. You can wear something casual. There’ s no need to get dressed up.
W: Well, I always try to make an effort to look smart!
M: Yes, of course, you always look fantastic, Mary. But you don’t have to dress up for radio. The audience can’t see you.
W: Ah, I see what you mean. In TV the audience can see you, so you have to look your best.
M: Exactly. You have to dress up. You have to put on something smart so you look the part.
W: Yes. I suppose if you’re on TV, you have to look like a TV presenter: you have to be dressed right.
M: But in radio, the listeners can’t see you so we can dress down if we want to.
W: Yes. That’ s why I sometimes wear jeans to work.
M: Exactly, on radio. I can take off my tie! I can even take off my shoes!
W: I don’t think so! You don’t have to wear your tie—you can take that off if you want to, but please don’t take off your shoes!
Questions 12 to 15 are based on the conversation you have just heard.
   12. What is the man going to do?
   13. Why does the man prefer working in the radio?
   14. What does "dress down" mean?
   15. Which statement is correct according to the conversation?