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: Mother's birthday is getting close. Have you thought about what to buy for her this year? ,F: Oh, I totally forgot. It's already May tenth. Her birthday is the day after tomorrow, right? ,M: Yes, I will get mom a beautiful dress. It will make her look younger. What do you want to buy? ,F: Since you will buy her a dress, I'll buy her something else. What do you think of a pair of shoes? ,M: Do you know what size she wears? It may not fit her if she doesn't try them on first. ,F: You're right. Do you have any suggestions? ,M: Well, she saw a handbag when I was shopping with her last week. She seemed to like it very much. ,F: Why didn't she buy it? ,M: She couldn't accept the price, but she really liked it. ,F: How about going downtown tomorrow morning? We can get the present for her there. ,M: OK.
(A) F: And then I'll buy the beautiful handbag for her birthday. I believe she'll love it! (B) F: Since you are going to buy the handbag for mom's birthday, I'll buy the shoes for her. (C) F: I am sorry. You spoke so rapidly that I did not catch the meaning of what you said. Could you repeat that? (D) F: Let me buy the handbag for you tomorrow as your birthday present, my son.

Ex Output:
A


Ex Input:
F: Excuse me, are you going to buy that textbook? ,M: Well, yeah, I need it for a class. But it's awfully expensive. ,F: Oh, we must be in the same class! Civil engineering? ,M: Yes, that's the one! ,F: Were you there last Friday for the first class? ,M: Yes. I only moved here last Monday, and I registered for the class last Tuesday. By the way, I thought Professor Qian really seemed to know his subject.
(A) F: Great. Since you moved here last month, you must have your first class last Monday. (B) F: Yes. It is great that you registered for class last Monday and had your first class last Tuesday. (C) F: His courses are great. You must learnt a lot of Civil Engineering in your first class last Friday. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:
C


Ex Input:
F: You look very anxious this evening. Is there anything wrong? ,M: I'm worried about my 15 year old niece Helen. ,F: What's worrying you. ,M: I've seen a big change in her. She used to be very outgoing and sociable, but now she is having problems with other children at school. Now, she is totally someone else. ,F: Really? ,M: Yes. Now, she is quiet and doesn't want to talk to anyone else. Her teacher said things are going backward in her study. ,F: Her parents must be very anxious about her. ,M: No, not really. Both of them are too busy to worry about their daughter. I think I need to talk to them and ask them to spend more time with Helen.
(A) F: Sounds really sad. Maybe all Helen wants is to see her busy parents. (B) F: Wow, I like Helen. She keeps scoring the first though her parents are busy. (C) F: I am really sorry, I did not catch that. Would you slow down, please? (D) F: So teachers worry about her as she's too sociable to focus on study now.

Ex Output:

A