In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.

Example Input: Problem: the largest 5 digit number exactly divisible by 91 is : 
Options: a ) 25698 , b ) 581396 , c ) 369741 , d ) 99918 , e ) 1258
Example Output: d

Example Input: Problem: how many 3 - digit numbers are divisible by 6 in all ? 
Options: a ) 149 , b ) 150 , c ) 151 , d ) 166 , e ) none
Example Output: b

Example Input: Problem: 3 numbers are such that the second is as much lesser than thr third as the first is lesser than the second . if the product of the two smaller numbers is 85 and product of two larger number is 115 then find the middle number 
Options: a ) 8 , b ) 9 , c ) 10 , d ) 12 , e ) 15
Example Output:
c