Task: Question Answering
Input (English): Problem: the banker â € ™ s gain on a sum due 3 years hence at 10 % per annum is rs . 120 . the banker â € ™ s discount is 
Options: a ) rs . 960 , b ) rs . 840 , c ) rs . 520 , d ) rs . 760 , e ) none
Output (English): c