Task: Question Answering
Input (English): Question: By selling an umbrella for Rs. 500, a shop keeper gains 20%. During a clearance sale, the shopkeeper allows a discount of 10% on the marked price. His gain percent during the sale is?

 Option A: 15%

 Option B: 12.5%

 Option C: 18%

 Option D: 11.11%

 Option E: 14%
Output (English): Option B