Task: Question Answering
Input (English): Problem: a sum was put at simple interest at a certain rate for 10 years . had it been put at 5 % higher rate , it would have fetched rs . 200 more . what was the sum ? 
Options: a ) s . 550 , b ) s . 1000 , c ) s . 600 , d ) s . 200 , e ) s . 400
Output (English): e