dialogue: M: Can I help you? W: Yes, I'd like a pound of oranges, please. M: Do you want the ones at 20 pence, 25 pence or 30 pence? W: The ones at 30 pence, please.
question: What is the price of a pound of oranges that the woman would like?
choice: 20 pence. 25 pence. 30 pence.
answer: 30 pence.