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: Oxford Travel Agency, how may I help you? ,F: Hello, I'd like to ask about the package tour from Newcastle to London. ,M: Sure, what's your question? ,F: Your website says that the trip starts off every Thursday. Can I join the trip on July thirtieth? ,M: Sorry, I'm afraid it's full. How many people are going? ,F: My husband and our two children will go with me. ,M: 4 people then. There is still enough places on August sixth. Will that do? ,F: That's fine. Any discount for children under 12? ,M: Sorry, the price for children is the same, 700 pounds each person. It's already cheaper than other agencies.
(A) F: I'm going alone, so I just need to pay the $700, right? (B) F: 1,400 dollars per person? So it's $2,800 for mom and me. (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: Wow, I will have to pay $3,300 in total for this Oxford trip.

Ex Output:
C


Ex Input:
M: Have you ever taken History 231? ,F: Yeah, last term. ,M: Who was the professor? ,F: Professor Johnson. ,M: I have him this semester. What do you think of him? ,F: He's a terrible instructor and demands a lot, but fortunately we can get high scores easily in his class. ,M: What did you get? ,F: I got an A, but none of my test scores were that high. So I don't know how I got such a good score. ,M: Really? I was about to give it up, but after hearing your experience, I think I will continue to stay in the class. ,F: You will get a better grade than your test scores. ,M: Thanks for the information. I feel relieved now.
(A) F: You are welcome. Wish you well in the new class. (B) F: You are welcome. Just go and have a talk with Professor David. (C) F: No worries, stay and you will get a good score. (D) F: I’m sorry, I don’t understand. Could you say it again?

Ex Output:
C


Ex Input:
F: Sir, the plane will be landing in Moscow in 20 minutes. Please remain seated. ,M: I'm sorry. I just wanted to get something to drink. I'm so thirsty. Can you bring me a glass of water?
(A) F: Sure. What do you want to have today? This is today's special in our restaurant. (B) F: Sorry, we don't have any water in the railway station. You should go to the supermarket outside. (C) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (D) F: Sure. Please fasten your seatbelt because we will be landing soon.

Ex Output:

D