Task: Question Answering
Input (English): Question: The C.P of 16 books is equal to the S.P of 18 books. Find his gain% or loss%?

 Option A: 11 1/9%

 Option B: 16 2/8%

 Option C: 16 2/5%

 Option D: 16 2/1%

 Option E: 16 1/3%
Output (English): Option A