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.

Input: Consider Input: M: How much is the cap? ,F: 8 yuan for 1, 14 yuan for 2, and 18 yuan for 3. ,M: Then I'll take 3.
(A) F: 8 yuan, please. (B) F: OK. These four caps cost 18 yuan. (C) F: 14 yuan, please. (D) F: I am afraid I did not quite catch what you were saying. Please repeat it.

Output: D


Input: Consider Input: F: Hey, Paul, you're still having Thanksgiving dinner at my house on Thursday, right? ,M: Yeah, thanks again for the invitation. I was worried I'd have to spend it alone after my parents announced they'd be in Finland. ,F: I think it's strange that you're not going with them. Is it because of the cold weather in Northern Europe? ,M: Not exactly. I have a lot of work to do next week. ,F: Well, I'm glad you won't be alone on a holiday. It'll be great to have you celebrate with us. The more the merrier! ,M: Exactly, how many people will be there? ,F: Let's see, my parents, my grandpa, my sister, my brother-in-law, my niece and my two cousins, plus us. So, ten people altogether. ,M: Should I bring anything?
(A) F: Nope. My husband will prepare Thanksgiving dinner to welcome you next Tuesday. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Not really. Just come next Thursday. We'd be happy to have you on Thanksgiving. (D) F: You and your parents' coming is good enough. See you on Saturday's Thanksgiving.

Output: C


Input: Consider Input: F: Wow, these photos are amazing. Are these yours, Danny? ,M: Yes, those are from my vacation last summer. I went to Lasa saw with my parents. ,F: Oh yeah, I've heard that Lasa is a beautiful place. I hope to visit Lasa of this autumn. I especially want to see the Potala Palace.
(A) M: Yes, Lhasa is a good place. I went back to Lhasa to visit my parents this autumn. These photos were taken this autumn. (B) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (C) M: Yes, when I visited my parents last summer, I found Lhasa very beautiful. (D) M: Yes, Lhasa is very nice. I saw my parents last summer, and these pictures were taken last fall.


Output: C