You will be given a definition of a task first, then some input of the task.
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.

M: Do you know Sally's new address? She's got some mail here, and I'd like to send it to her. ,F: Well, we have not been in touch for quite a while. Let's see. Mary should know.
(A) M: I know her new address. Let me get in touch with Mary directly. (B) M: I'm sorry, I don't understand. Could you say it again? (C) M: Please tell me her new address because I have to send some mails to her. You must know it. (D) M: Maybe I should get Mary's new address.
Output:
B