Task: Dialogue Generation
Input (English): M: How much will it cost to my twin daughters and me to visit the Gallery? ,F: It's 110 yuan for adults and a half price for children.
(A) M: So the tickets are 165 yuan, right? (B) M: So, I'd like to buy two tickets. 135 yuan in all, right? (C) M: Excuse me, could you repeat the question? (D) M: Yes, one adult ticket and two children tickets. That's 220 yuan. Is that right?
Output (English): D