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.

Ex Input:
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.

Ex Output:
A


Ex Input:
F: Can I sit here and wait for the doctor please? ,M: Sure but you may have to wait for a while. ,F: When will the doctor return? ,M: He said he'd be back around 4:30 PM, so an hour from now.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: You said he will back at 3:30 pm? (C) F: Okay, now is 3:30 pm and I will go to the mall first and be back one hour later. (D) F: He must be back as it's 4:30 pm now.

Ex Output:
C


Ex Input:
M: Hi, Jesse, I thought you'd be on your way to work by now, are you taking the day off? ,F: No no. I don't have to leave home so early, since I started traveling by subway. ,M: Oh, is that so? ,F: Yes, I can spend an extra half hour in bed. Have breakfast at home and still be on time for work. It's really very good. I mean, this subway. ,M: Isn't it expensive?
(A) F: I take the day off. Yes, it's expensive (B) F: I have enough time to go to work, although I don't take the subway. Yes, it's expensive (C) F: Excuse me, could you repeat the question? (D) F: I'm waiting you and then go out together. Yes, it's expensive

Ex Output:

C