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: Can I sit here and wait for the doctor please? ,M: Sure but you may have to wait for a while. ,F: When will the doctor return? ,M: He said he'd be back around 4:30 PM, so an hour from now.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: You said he will back at 3:30 pm? (C) F: Okay, now is 3:30 pm and I will go to the mall first and be back one hour later. (D) F: He must be back as it's 4:30 pm now.

Ex Output:
C


Ex Input:
M: What seems to be the problem, Mrs. Garcia? ,F: When I look at the newspapers, I can hardly read it. ,M: Well, you might need a new medicine. Let me examine your eyes.
(A) F: You can borrow Lu Xun's book here. (B) F: Excuse me, could you repeat the question? (C) F: Will you come to the hospital tomorrow? (D) F: How do I take these drugs?

Ex Output:
D


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: Fine, 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 car's in the car park. Is this all your suitcase? ,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: Although you have stones in your suitcase, I don't expect it to be so light. (B) M: God! You have 30 pairs of shoes in your suitcase! (C) M: I am afraid I did not quite catch what you were saying. Please repeat it. (D) M: God! You have 20 pairs of shoes in your suitcase!

Ex Output:

D