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:
M: Pam, where is the closest ATM? ,F: Do you see that yellow building over there? ,M: Yes. ,F: It's right next to it on the right.
(A) M: So it's next to the yellow building on the left, okay, I'll find it. (B) M: Alright, I'll go next to the yellow building and find the ATM. (C) M: I am really sorry, I did not catch that. Would you slow down, please? (D) M: Alright, I'll go to the red building and find the ATM opposite the convenience store.

Ex Output:
B


Ex Input:
M: What did you buy at the market? ,F: I bought some special local products. ,M: You seem to have bought the whole market. ,F: Yes. I really wanted to do so. I love those handicrafts, especially the papercuts. ,M: Papercuts are all handmade. Let me see the papercuts you bought. Oh they're all animals. ,F: Aren't animals. The main content of Chinese paper cuts. ,M: Alright animals are the most common theme in paper cuts, but there are other themes. ,F: I will buy some tomorrow. ,M: Why do you want to buy so many?
(A) F: Because I want to buy some paper-cuts tomorrow and give them to my friends. (B) F: I’m sorry, I don’t understand. Could you say it again? (C) F: I want to learn to make paper-cuts tomorrow and give them to my friends. (D) F: I didn't buy anything from the market. Tomorrow I will send paper-cuts to my friends.

Ex Output:
A


Ex Input:
M: Hello, E-shop. What can I do for you? ,F: I've just received your catalog and I'd like to inquire about something in it. ,M: Yes, ma'am. What's the product number? ,F: SP 506. ,M: Let me see. Here we are. It's our latest model of electronic dictionary. ,F: How many dictionaries does it contain? ,M: It contains a total of 6 dictionaries with different functions and an encyclopedia. You can also download updated materials from our website.
(A) F: Only four dictionaries? But there are two encyclopedia. Let me think. (B) F: I’m sorry, I didn’t understand. Could you repeat a little louder, please? (C) F: Wow, six dictionaries and an encyclopedia. This sounds really useful. (D) F: Six dictionaries and an encyclopedia are good, but I can't download materials.

Ex Output:

C