Given the task definition, example input & output, solve the new input case.
In this task, you will be shown a conversation and a question. You need to answer the question and choose the correct option based on the conversation. "W" and "M" in the conversations stand for "woman" and "man".
Example: M: I am considering dropping my dancing class. I am not making any progress. W: If I were you, I stick with it. It's definitely worth time and effort., Question: What does the man suggest the woman do? (A) Consult her dancing teacher. (B) Take a more interesting class. (C) Continue her dancing class.
Output: (C) Continue her dancing class.
This is a good example. Based on the conversation, we could understand that only option (C) is correct.

New input case for you: A: Good morning. Do you have any tickets left for this evening's performance? B: Let me just have a look. Well, there're a few seats left in the front stalls. How many tickets do you want? A: Just two. B: Yes, I can give you two in the third row. They are 39 pounds each. A: 39 pounds! I see. All right, I'll take them. B: That's 78 pounds altogether. You can come to pick them up by 6:30., Question: What's the total cost of the tickets? (A) 78 (B) 39 (C) 36
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
(A) 78