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: The office door was locked when I came back yesterday. I left something important in my office. Why didn't you answer my phone call afterwards? ,F: Maybe it was too noisy to hear it. I thought you would have the key on you.
(A) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (B) M: I really needed to get something important in my bedroom. (C) M: Oh, I called several times but nobody answered. I really wanted to get something important. (D) M: I did, so I went back to the office and locked the door.

C