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.

Example Input: M: Why do you have an umbrella with you? It's not supposed to rain today, is it? ,F: No, but it's supposed to be very hot. I'll use this umbrella to protect myself from the sun as soon as these clouds go away. ,M: I've never heard of using an umbrella for protection from the sun. ,F: Did you know that the Chinese invented the umbrella, and that it's first use was for protection against the sun, not the rain? ,M: I had no idea, you must get sunburned easily, huh? ,F: Oh, absolutely. I always get super red if I haven't put on sun cream.
(A) M: Do you never put on sunscreen because you are not easy to get sunburn? (B) M: Since you are so easy to get sunburned, why don't you bring an umbrella? (C) M: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (D) M: You don't even know the first use of umbrella. No wonder you don't have an umbrella.
Example Output: C

Example Input: M: Now, I see from your records that you're often off sick. ,F: Yes, I seem to get a lot of colds and things. ,M: I see. Can I ask about your general way of life? Do you smoke? ,F: I don't smoke. ,M: That's good. Do you eat a lot of fruit and vegetables? ,F: Not really, especially no fruit. ,M: Well, since you don't eat fruit, I think you should drink more water because it helps fight colds. ,F: Really? Hmm...I don't like drinking water. But, well, uh, perhaps. ,M: There's no perhaps about it. And some exercise is needed to improve your health. ,F: Oh, I go swimming once a week. ,M: Well, you should go swimming 3 times a week, so that it really helps your health.
(A) F: You mean exercise is not needed, and it's enough to go swimming once a week. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: Ok, I will go swimming twice a week. I hope it helps fight fever. (D) F: I think so. I hardly ever get sick because I go swimming 3 times a week.
Example Output: B

Example Input: M: It's our tenth anniversary. Where would you like to go this time? I can take 5 days off work. That will give us 9 days in total, including the weekends before and after. ,F: Somewhere warm and full of sunshine. How about Bali? ,M: It's close, only a 2 hour flight from here, but that place is too expensive. ,F: Emm, then how about Fiji? ,M: I don't like long flights. It's 12 hours from Beijing. What about Thailand? 6 hours on the plane to Phuket isn't that bad and I always love Thai food. ,F: That would be a great place. Since we have so much time, maybe we can take a day trip to the Similan Islands. I have been wanting to visit that National Park. The pictures look wonderful.
(A) M: OK. Let's go to the national park in Thailand. (B) M: I guess we can go to the national park in Thailand, but I hate the food there. (C) M: I’m sorry, I didn’t catch that. Would you mind speaking more slowly? (D) M: You are especially interested in the food from Thailand? They are so bad!
Example Output:
A