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: I'm returning the book you lent me. ,M: That isn't my book. ,F: Isn't it? That's funny. It must belong to your brother, then.
(A) M: No, it belongs to me. (B) M: I didn’t hear you. Please could you tell me again? (C) M: Yes, it belongs to my brother. (D) M: No, it belongs to your brother.

C