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: F: Your school bag is really cool. Where did you get it? ,M: My aunt sent it from Australia for Christmas.
(A) F: I see, your favorite holiday is Christmas, your uncle bought you a bag for Christmas, right? (B) F: Your aunt sent the school bag to you from Australia. It's so cool! (C) F: It's nice of your aunt to send you a bag from England. (D) F: Just a minute! I do not quite follow what you are saying, would you mind repeating that?
Example Output: B

Example Input: M: Hello, could I speak to Selina, please? ,F: Speaking. Is that you, Tom? What's wrong with your voice? I hardly recognize your voice. ,M: I practice singing last night. I guess I practiced too hard. You know, it lasted from 7:00 to 9:00 last night. ,F: You must have hurt your voice. So what can I do for you? ,M: Well, Bob and his girlfriend have returned from China. Jenny and I invited them to come over and have dinner with us tonight. I've just opened the box of glasses and there is one missing. Then I remembered my son broke one about 2 months ago. I remember we bought the glasses together and you bought the same set of glasses. So can I borrow a glass from you?
(A) F: Although Jenny is your neighbor, we didn't go to buy glasses together, did you? (B) F: I am really sorry, I did not catch that. Would you slow down, please? (C) F: Although Jenny is your friend, why did you buy the glasses together? (D) F: I didn't even know Jenny was your wife.
Example Output: D

Example Input: M: Is everything ready for Billy's birthday party? ,F: Yes. I finished making the birthday cake and I put everything on the table. Did you find the party hats? ,M: Yes, I did. I put one for each child on the table. I put up the big "Happy Birthday" sign, too. ,F: Thanks, honey. Do you think we have enough for the kids to eat and drink? ,M: I'm sure we do. Here's enough food to feed an army. ,F: That birthday cake looks beautiful, but you haven't put any candles on it yet. ,M: Thanks for reminding me. I've prepared some party games for the children, too. ,F: Great. I bought a tape with a lot of children songs on it.
(A) M: Oh, you are so thoughtful, children will love the tapes you bought. (B) M: The big sign you have put up is very beautiful. (C) M: Now that you have bought the tape, let's put up the big "Happy Birthday" sign. (D) M: I am really sorry, I did not catch that. Would you slow down, please?
Example Output:
A