Task: Question Answering
Input (English): Question: John professes to sell his goods at the cost price but he made use of 800 grams instead of a kg, what is the gain percent?

 Option A: 12 1/3%

 Option B: 12 1/4%

 Option C: 12 2/3%

 Option D: 12 2/1%

 Option E: 12 1/2%
Output (English): Option E