W: Good afternoon! Dr. Perkins' office. M: Good afternoon. I'd like to speak to the doctor. Is he in? W: Who is that calling, please? M: My name is Li Hong. I'm from China. W: I'm sorry. Dr. Perkins is now at an important meeting and can't answer your call. M: I'm an exchange scholar. Dr. Perkins asked me to give a lecture. There are some details I want to discuss with him. W: I see, but you must speak to himself about that. Oh, well, if you leave your number, I'll tell him to ring you as soon as he is available. M: Thanks. My number is 7838298., Question: What is the doctor doing at the moment? (A) Giving an operation. (B) Giving a lecture. (C) Having a meeting.
(C) Having a meeting.