Task: Question Answering
Input (English): Question: The C.P of 10 pens is equal to the S.P of 12 pens. Find his gain % or loss%?

 Option A: 16 2/9%

 Option B: 16 2/4%

 Option C: 16 2/3%

 Option D: 16 2/1%

 Option E: 16 2/6%
Output (English): Option C