Task: Question Answering
Input (English): Problem: what will be the compound interest on a sum of rs . 20,000 after 3 years at the rate of 12 % p . a . ? 
Options: a ) rs . 8098.56 , b ) rs . 9720 , c ) rs . 10123.20 , d ) rs . 10483.20 , e ) none
Output (English): a