Task: Question Answering
Input (English): Problem: a man took loan from a bank at the rate of 12 % p . a . s . i . after 20 years he had to pay rs . 2100 interest only for the period . the principal amount borrowed by him was ? 
Options: a ) 600 , b ) 715 , c ) 600 , d ) 875 , e ) 900
Output (English): d