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:
F: I hope you can come to the party on Saturday. ,M: I didn't know I was invited. ,F: Sure you are, everyone in our office is invited.
(A) M: Thank you, teacher. I am sure our classmates will attend the lecture on Saturday. (B) M: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) M: Why you didn't invite our parents to the concert on Saturday? (D) M: Oh, great. So I will meet our workmates there.

Ex Output:
D


Ex Input:
M: I saw you on the news! You're a hero! Come on, tell me all the details. ,F: Well, I was watching the pool from my chair, like I always do. There was a group of kids taking diving lessons in the deep end. ,M: Go on. ,F: I guess one of the students hit their heads on the diving board, because I saw that someone was sinking to the bottom of the pool. ,M: So what did you do next? ,F: I jumped in the pool after their instructor jumped in and brought the kid back to the surface. It was a young girl, and she had swallowed a lot of water. ,M: Wow, did you give her mouth-to-mouth? ,F: Of course. Then I told one of the kids to call for an ambulance. ,M: Quick thinking. ,F: The girl coughed the water up almost immediately, and just like that, it was over. We cleaned the wound and bandaged it up, and the emergency services arrived 20 minutes later. ,M: How was she? ,F: She had no memory of the past 10 minutes. She wanted to go back in the pool. She didn't even know why her parents were crying.
(A) M: She lost her memory and didn't know what happened. (B) M: So, she lost her memory of the past 60 minutes. (C) M: Excuse me, could you repeat the question? (D) M: Oh, she couldn't help crying.

Ex Output:
A


Ex Input:
F: Good morning, doctor Smith's office. What can I do for you? ,M: Hello, this is Bob speaking, there's a pain in my stomach. I'd like to make an appointment to see the doctor this afternoon. ,F: Let me see. I'm afraid he is busy at that time. ,M: How about tomorrow? ,F: Sorry, but he'll be busy too tomorrow morning, and our office won't open in the afternoon. Will the day after tomorrow be ok? ,M: Ok, morning please, as soon as possible. ,F: Then come at 9:00 o'clock in the morning, the day after tomorrow, please
(A) M: Ok, the day after tomorrow will be ok. (B) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (C) M: Well, I'll see the doctor tomorrow afternoon. I've been having the toothache for several days. (D) M: Well, I'll see the doctor this afternoon to treat my toothache.

Ex Output:

A