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

Ex Input:
Problem: the ratio between the number of sheep and the number of horses at the stewart farm is 5 to 7 , if each horse is fed 230 ounces of horse food per day and the farm needs a total 12,880 ounces of horse food per day , what is the number of sheep in the farm ?
Options: a ) 18 , b ) 28 , c ) 40 , d ) 56 , e ) 60

Ex Output:
c

Ex Input:
Problem: sachin is younger than rahul by 14 years . if the ratio of their ages is 7 : 9 , find the age of sachin
Options: a ) 48 , b ) 24.8 , c ) 24.21 , d ) 24.88 , e ) 49

Ex Output:
e

Ex Input:
Problem: each factor of 290 is inscribed on its own plastic ball , and all of the balls are placed in a jar . if a ball is randomly selected from the jar , what is the probability that the ball is inscribed with a multiple of 42 ?
Options: a ) 1 / 16 , b ) 5 / 42 , c ) 16 , d ) 3 / 16 , e ) 1 / 4

Ex Output:
c