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: 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:
M: Hello, Barbara. Welcome back. You look great. ,F: Rod, it's lovely to see you again. ,M: How was your trip? ,F: Fun, but tiring. Milan was interesting. It's bigger than I expected, noisier and dirtier too. ,M: And Florence? What did you think of Florence? ,F: Well, I didn't go there. Have you been there? ,M: No, I've never been to Italy. I'd really like to go to Rome. Well, the cars in the car park. Is this all your luggage? ,F: Yes, but the suitcase is very heavy. ,M: Barbara, what's in it? Books or stones? ,F: Just 20 pairs of shoes.
(A) M: So you are taking 20 shoes to Milan now? (B) M: Why do you take so many shoes? (C) M: Why do you take stones to travel? (D) M: I’m sorry, I don’t understand. Could you say it again?

Ex Output:
B


Ex Input:
F: Hi, Dan, I'm calling to check on that order of 100 computers were the tenth of September. However, it has been delayed for 2 days. ,M: Yes, I know. I mean to call you and tell you that the factory is short of hands at the moment. They say they can get the order to you by the eighteenth. ,F: Oh, that's too late. If you can give me Steve's phone number, I'll call him and tell him about this. Do you have his number handy? ,M: Yes, it's 87506638.
(A) F: Thanks. I'll call him to check if my order of September 10th will arrive on time today. (B) F: Got the number. I really can't wait for the order to arrive 6 days later on the eighteenth. (C) F: Alright. It's already September 12th. My computer order should have arrived today. (D) F: Excuse me, could you repeat the question?

Ex Output:

B