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: Hi Miya, how are you? ,F: I'm very well, thanks. But I'm crazy busy these days. How are you? ,M: Fine, thanks. Why are you so busy? ,F: I have a Chinese test next week.
(A) M: So you are busy with your Chinese study for the commming exam this Friday. (B) M: Which level of the Chinese test you will have next week? (C) M: I didn’t hear you. Please could you tell me again? (D) M: Why do you want to go to the cafe? You are so free these days.
Example Output: B

Example Input: F: Welcome to our restaurant. What kind of dishes would you like? Here's the menu for specialty. ,M: I like beggars chicken best but I am waiting for another 3 friends now.
(A) F: It's so nice of you to take your parents to dinner. (B) F: OK, I can take your order when your neighbors arrive. (C) F: I'm not surprised that your three other friends are going to the theatre instead of having a meal with you. (D) F: I didn’t hear you. Please could you tell me again?
Example Output: D

Example Input: M: It's grandpa's birthday next week. We must have a surprise party. ,F: A party? Do you mean you want to have loud music and food everywhere? ,M: Well, no, but grandpa will. You know he loves jazz. ,F: OK, well, how about having it at a hotel? ,M: Hotels are expensive, and it's too cold for a garden party at this time of year. We really should have it here at our house. ,F: Ok, I suppose you're right. What food should we have? ,M: Oh, I'll make some pizzas, and I'm sure grandma will make a birthday cake. ,F: Yes, I'm sure she will. I'll make some salad, then. What do you think I should get him? ,M: Let me think. No scarves or hats. I'm giving him a scarf and grandpa just bought a hat last month. What about a book? He reads a lot. ,F: Ok, good idea. Oh, what day should we plan to have the party? ,M: Well, the birthday is on Thursday. So we could do it on Friday. No, Saturday. Saturday is the best day for a party.
(A) F: Great! Let's go to the bookstore and buy grandpa a book. (B) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that? (C) F: OK. We'll have the party on Friday. We should buy a book for him now. (D) F: Fine. Let's buy grandpa a hat and give him at the party on Friday .
Example Output:
A