F: Sir, can I come in, now? ,M: Sorry, madam. I'm afraid that we don't open for another half an hour. Our business hours are from 8:30 AM to 5:30 PM.
(A) F: Oh, I see, it's only 8:00 am now. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: Really? But it's already 8:30 am now. (D) F: Really? But it's 5:30 pm now.
A