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: Was that telephone ringing? ,F: I didn't hear anything. ,M: I thought I heard it ring two or three times. ,F: Sometimes when the windows are open, you can hear our neighbors phone. ,M: Well, I'm expecting an important phone call and I don't want to miss it. ,F: Is it anything I should know about? ,M: Not really. It has something to do with work and doesn't really affect us here at home. ,F: Well, why don't you go ahead and do what you want to do outside? I'll call you if the phone rings. ,M: Thanks, I think I will. I've been waiting so long now. I'm getting nervous. I need to breathe in some fresh air.
(A) F: The phone you are waiting for will not come even you're very nervous, so just relax. (B) F: Don't be nervous about neighbor's phone, we won't hear it even with open windows. (C) F: I'm sorry, I don't understand. Could you say it again? (D) F: It must be the phone you're waiting. We can't hear our neighbor's phone at any case.
Output:
A