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.

Example Input: M: Mother, can you buy me a copy of this month's sunrise magazine? There's an article in it about how to care for fish. ,F: Sure. I'll get one for you this afternoon when I go to get a new teapot.
(A) M: Thanks. I just need a fashion magazine. (B) M: Thanks. I just need a magazine. (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: Could you please bring me a teapot?
Example Output: B

Example Input: F: Eddie, you've got to come over and see my parrot. It's learning so many words now. ,M: Really? Last time I saw him all he could say was something that sounded like hello. ,F: Well, now, he can a sing a song too. ,M: Which song did you teach him? ,F: Calorie. You know that popular song by a group of girls right? Actually I didn't teach Goby the words. I was dancing to the song on the radio and he just picked it up. ,M: That's a pretty smart bird. I'll come over after school today. Let's take a video of him and put it on line.
(A) F: I'm sorry, I don't understand. Could you say it again? (B) F: I will send you the link, so you can watch the video online after school today. (C) F: Come to my house after school, I will take videos of you. (D) F: My bird would be waiting for you to teach him more words after school today.
Example Output: A

Example Input: M: Hello, could I speak to Selina, please? ,F: Speaking. Is that you, Tom? What's wrong with your voice? I hardly recognize your voice. ,M: I practice singing last night. I guess I practiced too hard. You know, it lasted from 7:00 to 9:00 last night. ,F: You must have hurt your voice. So what can I do for you? ,M: Well, Bob and his girlfriend have returned from China. Jenny and I invited them to come over and have dinner with us tonight. I've just opened the box of glasses and there is one missing. Then I remembered my son broke one about 2 months ago. I remember we bought the glasses together and you bought the same set of glasses. So can I borrow a glass from you?
(A) F: You want me to buy you a glass? But why didn't you practice singing last night? (B) F: Although you want to have dinner with me, we haven't bought glasses together. (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: Although you want me to lend you a glass, our glass is different.
Example Output:
C