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: Now if there are no more questions, let's move on to the next part. ,M: Excuse me, professor, could we go over that last point once more?
(A) F: I didn’t hear you. Please could you tell me again? (B) F: Ok, since you want to review the last point, I will tell it again. (C) F: Although you want to move on to the next part, we still have some questions. (D) F: If you want to ask more questions, go ahead. We won't move on to the next part yet.

Ex Output:
B


Ex Input:
M: Good morning, Madam. Are you being helped? ,F: No, I'm not. ,M: Where? I can certainly help you if you'd like some advice. This skirt and scarves over here are back in style. ,F: Oh, I'm here to look for a winter coat. ,M: How about this one? It's made of very high-quality wool. ,F: It's nice but actually I need something warmer. This would work if I were staying here in Los Angeles. But it's too light for Chicago winter. ,M: Ah, you need a very heavy coat. Then please follow me. This one here is a good value and is one of our warmest coats. It's also quite fashionable and very comfortable. ,F: Would it be possible to get a discount on it? ,M: Maybe we can give you a 5% discount. ,F: OK. I'll take it. ,M: Can interest you in some gloves? They are 10% percent off now.
(A) F: I am afraid I did not quite catch what you were saying. Please repeat it. (B) F: No. Although the skirts are 10% percent off now, I do not want to buy. (C) F: No, thanks. I already have gloves, I do not need buy a new pair. (D) F: Thanks for recommending gloves to me, but I do not need them here in London

Ex Output:
C


Ex Input:
F: Terrible. How about peoples lives? ,M: Fortunately no person died. ,F: That's great. It seems that typhoon is not as bad as earthquake. ,M: Yeah, earthquake is one of the worst natural disasters in the world. ,F: That's why many people died in the earthquake. ,M: Well, China is located on the Eurasia Plate, where earthquakes happen frequently due to the earths plates knocking against each other.
(A) F: I know that some people died in this time's typhoon. It's really terrible. (B) F: Earthquakes take away few lives, so they're not as terrible as typhoon. (C) F: I’m sorry, I don’t understand. Could you say it again? (D) F: Earthquake never hits China, so this traffic accident is even more terrible.

Ex Output:

C