A、Its low purchase price. B、Its wide availability. C、Its good nutritional value. D、Its higher water content. C[听力原文] What would

W: I’ve been reading about new healthful food which you can eat in your leisure time and will not put on weight. It’s made from fish. Have you heard anything about it?
M: No. I haven’t.  But I don’t like fish very much anyway.
W: Don’t worry. Although it is made primarily from fish, it actually doesn’t have a fishy taste. In fact, it can be flavored with tomato, cheese, or chocolate for instance.
M: That sounds good. I suppose this product will be low calorie and high protein, like, eh, health food.
W:  Yes, you could call it that. And it has a long shelf life, so it won’t spoil quickly. It is also easy to digest and can be made from types of fish that usually aren’t eaten, or from high-grade fish byproduct.
M: Hm... Have you got any samples? I might be willing to try the cheese flavored variety.
W: No, none of this seems to be available yet. As I understand it,this fish food probably won’t be in the stores for another couple of years, so you have a while to get used to the whole idea.
M: A couple of years, huh? It may just take me that long. But thanks for telling me about it.