Task: Question Answering
Input (English): Question: A tailor trims 7 feet from opposite edges of a square piece of cloth, and 5 feet from the other two edges. If 45 square feet of cloth remain, what was the length of a side of the original piece of cloth?

 Option A: 13

 Option B: 15

 Option C: 17

 Option D: 19

 Option E: 21
Output (English): Option D