Task: Question Answering
Input (English): Problem: how much more would rs . 50000 fetch , after two years , if it is put at 20 % p . a . compound interest payable half yearly than if is put at 20 % p . a . compound interest payable yearly ? 
Options: a ) 482 , b ) 1205 , c ) 992 , d ) 837 , e ) 923
Output (English): b