Given the task definition and input, reply with output. In this task you are given a small conversation between two persons and 4 options on how the conversation should continue. Your job is to choose the most reasonable option. The conversation and the options are separated by a newline character. Each dialogue in the conversation are separated by a comma. F and M indicate female and male, respectively.

F: Dr. Morris office, what can I do for you? ,M: Hello, this is Bob. Can I come to see the doctor at 9:30? ,F: Sorry, but he will be seeing another patient then. Can you come half an hour earlier?
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: OK, I will come to see the doctor at 9:30. (C) M: I get it, the other patient will come to the doctor's office at 9:30. (D) M: I will ask Lily to be there at 8:30.
A