Task: Question Answering
Input (English): Question: A shopkeeper purchased 80 kg of potatoes for Rs. 550 and sold the whole lot at the rate of Rs. 9 per kg. What will be his gain percent?

 Option A: 22.6 %

 Option B: 30.9 %

 Option C: 35.6 %

 Option D: 39.5%

 Option E: 23.6 %
Output (English): Option B