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'm planning to go to Canada on vacation. ,M: What places are you going to visit? ,F: First, I'll spend a few days in Vancouver. Then I'll take a train through the Rocky Mountains. ,M: Oh, you're riding through the Rocky Mountains. That's really exciting. ,F: Then I'll fly to Toronto and take a bus to Niagara Falls. I will take a boat under that huge waterfall. ,M: Wow, that's wonderful. You're so lucky! ,F: Well, I hope I don't get seasick. I'll finish my trip in Nova Scotia. I'd like to bike around some small fishing villages. ,M: Have a great time and take lots of pictures!
(A) F: Thank you. I really had a wonderful experience yesterday. (B) F: I am reading an introduction to Canada, but I will not go to Canada. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Thanks a lot. My travel plan is perfect. I will have a good time.

Ex Output:
D


Ex Input:
F: I have been having a lot of trouble managing my time. I always forget my test and homework, due dates and I can never find the right notes I need. I heard that you're really organized. Do you think you could help me? ,M: Sure, I'd be happy to help. First of all, you need to get a planner, like this one. It's a small notebook in calendar where you can write down all the important dates you need to remember. Then you should create some sort of filing system to organize your notes. I use different colored files to keep the papers for my different classes.
(A) F: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (B) F: Really? You mean you'd not be happy to help me? Oh, we are classmates. (C) F: So, you mean first I don't need to get a planner? Okay, I will take your advice, teacher. (D) F: Oh, you are the considerate classmate. I will take your advice. Thank you.

Ex Output:
D


Ex Input:
M: This is a beautiful hat. I saw you wearing it last week, didn't I? ,F: Oh, that wasn't me. That was my sister Jessie. She's in your class.
(A) M: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (B) M: Really? But how do you know Jessie is my sister? (C) M: Really? I haven't heard that you have a brother. (D) M: Really? But your classmate Jessie and you look very similar.

Ex Output:

A