W: So, how are things going, Steve? M: Well, to be honest, Carla, I was feeling great on Saturday, but I started to feel sick Sunday afternoon. I thought I'd get better, but I feel worse than before. And I'm really worried because I'm scheduled to give a presentation at work on Friday, so I have to be better by then. W: Well, what seems to be the problem? M: Well, I thought I had the flu, but the doctor said it was just a bad cold. He gave me some cold medicine to take care of my stuffy nose and fever. I'm supposed to take the medicine three times a day after eating, but it doesn't seem to help. He also told me to stay off my feet for a day or so, but I'm so busy these days. W: Listen, forget about that medicine! I have just the thing to get rid of bad cold. You see, my mom is really into Chinese traditional medicine. M: Oh, thanks. W: Ah, come on! Give it a try. You just take some of my mom's Chinese medicine and drink it four times a day. Believe me. You'll be up and dancing around in no time. M: Dancing around in no time, right? Well, I guess. Nothing else seems to be doing the job. W: Great. I'll come by your place at 7:30.M: See you then.What's wrong with the man?
选项：

A:He has a cold.
B:He has the flu.
C:He has a stomachache.
D:He has a headache.