A、It drops sharply. B、It falls slowly. C、It stays the same. D、It increases slowly. B女士问男士对突然降温的古典音乐的看法，男士则回答说这并不是一个突发的情况，而是多年来缓慢

W: Well, tonight we have Andrew Green in our studio to talk about music. Andrew is a great guitarist and has his own band. So, Andrew, welcome.
M: Thanks a lot. My pleasure to be here tonight.
W: Now, Andrew, perhaps you could tell us something about the future trends for the global music industry?
M: Sure. Well, from my perspective as a musician, [19] I can see a dramatic increase in the popularity of Latin music, even now. If this trend continues, I imagine the popularity of Salsa  dancing will also rise dramatically. This may result in a slight decrease in the popularity of other types of music.
W: What do you think of the sudden drop in interest in classical music?
M: I think this trend has been in the works for quite some time. As more and more varieties of music become available to consumers, the classic standards may suffer in the popularity contest. [20] I think the drop in interest of classical music hasn’t been sudden at all, it’s been slow and steady for many years now.
W: Is there any type of music that is consistently popular with most people?
M: If you look at the numbers, rock and roll music has remained a steady constant through the years. I expect the popularity of rock and roll will stay the same in the coming years.
W: It’s said that [21] rock music might make one livelier and happier. What do you think of it?
M: That’s tree. Research suggests that music can influence a person’s feelings and character.  [21] There’s clear evidence that people who listen lively music are lively people.