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: Good morning, madam. What can I do for you? ,F: I bought this new radio here half a month ago, then I posted it to my daughter who is studying English in Shanghai Foreign Language University. But a week later she posted it back, saying that it doesn't work. I don't know why. Could you help me check out the radio? ,M: Let me see. Did you check it when you bought it?
(A) F: The radio stopped working one day when I was listening to music. It doesn't work anymore. (B) F: I didn’t hear you. Please could you tell me again? (C) F: I really need to go back to the post office to take back my radio. (D) F: Maybe. Now the radio stops receiving any program.

Ex Output:
B


Ex Input:
M: Good morning, Ann. ,F: Good morning, Mister Jones. ,M: How about a cup of coffee? ,F: I will make it now. ,M: And can you tell me what meetings I have this week? ,F: I will bring the diary. OK, this afternoon you have a meeting with your accountant at 5:00 PM. On Wednesday, you are going to London. Don't forget your train leaves at 9:30 AM. ,M: OK, what time is my meeting in London? ,F: At 11:30 AM. And on Thursday, Miss Von wants to talk to you.
(A) M: Thanks, you are a good student. (B) M: Thanks. I am such an excellent secretary. (C) M: Thanks, you are such an excellent secretary. (D) M: I am afraid I did not quite catch what you were saying. Please repeat it.

Ex Output:
C


Ex Input:
F: Good afternoon, Mister Smith. Have you planted a garden this year? ,M: No, you should see everything I'm growing in my backyard. There are beans, cucumbers, tomatoes and several kinds of carats. ,F: You have fruit trees back there too, right? ,M: I do. I have an apple tree and a pear tree. I actually have a bunch of ripe pears. You can take them to your family. ,F: Thanks, Mister Smith. But I'm off to volleyball practice right now. My brother is home though, he can come to get some from you. ,M: I thought your brother had an after-school job. ,F: He does, he works at the grocery store, but only on Tuesday and Thursday.
(A) M: I am really sorry, I did not catch that. Would you slow down, please? (B) M: OK, I see. You mean he  works at the grocery store, and you will practice volleyball next, right? (C) M: OK, I see. You mean your brother had no after-school job and you will practice volleyball next, right? (D) M: So, you will go to the grocery store next and your sister is home though, she can come to get some from me?

Ex Output:

B