W: Good morning, sir. Can I help you? M: Yes. I'd like a single room with a bath. W: Do you have a reservation, sir? M: No. W: OK. Please wait a second. I'll find a room for you., Question: What is the man doing? (A) He's checking in. (B) He's ordering meals. (C) He's making a reservation.
(A) He's checking in.