Definition: 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.
Input: F: May I help you? ,M: Yes, when is the next train to London? ,F: Oh, let me check. It leaves in 20 minutes.
(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: Look! The inner space of this train is big, and here is my seat. (C) M: Thank you. This is a nice ticket office. Please give me the air ticket. (D) M: Thank you. This is a nice ticket office.

D