In this task, you need to provide the correct option for a given problem from the provided options.

Example Input: Problem: if log 1087.5 = 3.9421 , then the number of digits in ( 875 ) 10 is ? 
Options: a ) 30 , b ) 28 , c ) 27 , d ) 50 , e ) 25
Example Output: d

Example Input: Problem: divide rs . 32000 in the ratio 3 : 5 ? 
Options: a ) 12000 , 20000 , b ) 12000 , 200098 , c ) 12000 , 20007 , d ) 12000 , 20006 , e ) 12000 , 20001
Example Output: a

Example Input: Problem: a dog takes 2 leaps for every 3 leaps of a hare . if one leap of the dog is equal to 5 leaps of the hare , the ratio of the speed of the dog to that of the hare is : 
Options: a ) 9 : 3 , b ) 3 : 10 , c ) 2 : 3 , d ) 6 : 3 , e ) 10 : 3
Example Output:
e