Task: Dialogue Generation
Input (English): M: How much are these shirts? The tag price is $50. ,F: The regular price is $40 each, but you can have 2 of them on sale today for $60.
(A) M: I am afraid I did not quite catch what you were saying. Please repeat it. (B) M: So it's $30 each, what a bargain! (C) M: $40 for 2 shirts is a good price. (D) M: So it's $30 cheaper than the tag price.
Output (English): B