Task: Question Answering
Input (English): Problem: if difference between compound interest and simple interest on a sum at 10 % p . a . for 2 years is rs . 61 then sum is 
Options: a ) s . 6100 , b ) s . 5100 , c ) s . 5800 , d ) s . 6000 , e ) s . 6200
Output (English): a