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

Example Input: Problem: in a ratio which is equal to 4 : 6 , if the antecedent is 20 , then the consequent is ?
Options: a ) 72 , b ) 85 , c ) 30 , d ) 51 , e ) 45
Example Output: c

Example Input: Problem: income and expenditure of a person are in the ratio 10 : 7 . if the income of the person is rs . 10000 , then find his savings ?
Options: a ) 3005 , b ) 3098 , c ) 3300 , d ) 3010 , e ) 3000
Example Output: e

Example Input: Problem: in gabriel ' s sheep herd , every sheep has either fleas or lice or both . half of the sheep have lice , and 84 sheep have both pests . if 94 sheep have lice , how many sheep have only fleas ?
Options: a ) 10 , b ) 20 , c ) 84 , d ) 94 , e ) 178
Example Output:
a