M: Hi, Lily. Where were you at lunchtime? I was looking for you in the dining hall. W: Oh, sorry, I missed you. My English class ran late again. M: That's been happening quite often recently. Maybe it's because the final exams are coming up. W: Yes. After class, there is always a group of students hanging around the professor asking questions. How about you? Are yon ready for the exams? M: I've been studying a lot recently, but my math problems are really giving me a big headache. W: Don't worry, Tom. There's still one month to go before the exam. You have enough time to work them out. M: Well, I don't need to spend much time on other subjects. I can pay more attention to my weak subjects., Question: Why didn't the man see Lily at lunchtime? (A) She didn't have lunch at all. (B) She was busy preparing for the exam. (C) Her English class didn't finish on time.
(C) Her English class didn't finish on time.