Task: Question Answering
Input (English): Problem: the ratio of the two natural numbers is 6 : 5 . if a certain number is subtracted to both the numbers , the ratio becomes 5 : 4 . if the larger number exceeds the smaller number by 5 , find the number subtracted ? 
Options: a ) 8 , b ) 5 , c ) 15 , d ) 22 , e ) 6
Output (English): b