Task: Question Answering
Input (English): Problem: a sum was put at simple interest at certain rate for 3 years . had it been put at 1 % higher rate it would have fetched rs . 78 more . the sum is : a . rs . 2,400 b . rs . 2,100 c . rs . 2,200 d . rs . 2,480 
Options: a ) 2000 , b ) 2600 , c ) 2200 , d ) 2300 , e ) 2400
Output (English): b