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

Ex Input:
Problem: in the standard formulation of a flavored drink the ratio by volume of flavoring to corn syrup to water is 1 : 12 : 30 . in the ` ` sport ' ' formulation , the ratio of flavoring to corn syrup is three times as great as in the standard formulation , and the ratio of flavoring to water is half that of the standard formulation . if a large bottle of the ` ` sport ' ' formulation contains 3 ounces of corn syrup , how many ounces of water does it contain ? 
Options: ['a ) 45', 'b ) 50', 'c ) 55', 'd ) 60', 'e ) 63']

Ex Output:
a


Ex Input:
Problem: there are 35 kids in a play school . 26 kids play with white color balls and some kids play with yellow color balls and 19 kids play with both color balls . how many kids use yellow color balls ? 
Options: a ) 12 , b ) 32 , c ) 5 , d ) 28 , e ) 35

Ex Output:
d


Ex Input:
Problem: the ratio of incomes of two person p 1 and p 2 is 5 : 4 and the ratio of their expenditures is 3 : 2 . if at the end of the year , each saves rs . 1200 , then what is the income of p 1 ? 
Options: a ) s . 800 , b ) s . 2400 , c ) s . 3000 , d ) s . 3200 , e ) s . 4200

Ex Output:

c