Task: Question Answering
Input (English): Problem: in a store, the total price for 25 shirts is $ 400 and the total price for 75 sweaters is $ 1500. by how much does the average ( arithmetic mean ) price of a sweater exceed that of a shirt in this store ?
Options: a. $ 1, b. $ 2, c. $ 3, d. $ 4, e. $ 5
Output (English): d