Task: Dialogue Generation
Input (English): F: Very nice skirts. How much are they? ,M: $10 each, and one dollar off if you buy 2. They're on sale.
(A) F: So you mean $18 for each one? (B) F: So there won't be any discount even if I want to buy two? (C) F: I didn’t hear you. Please could you tell me again? (D) F: Here is $19 for these 2 shirts.
Output (English): D