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: M: Hello, may I speak to Mr Brown? ,F: I'm sorry, he's out for lunch. Would you like to leave a message? ,M: Uh, what time do you expect him back? ,F: Say in half an hour. ,M: Thank you. I'll try back later.
(A) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) F: OK. I will tell you where he is when you come again. (C) F: OK. I will wait for your call in 15 minutes as he will be back by then. (D) F: OK. I will tell Mr. Brown your message.

A