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

Ex Input:
Problem: what number has a 3 : 4 ratio to the number 400 ? 
Options: a ) 130 , b ) 100 , c ) 200 , d ) 300 , e ) 120

Ex Output:
d


Ex Input:
Problem: of the 55 cars on a car lot , 40 have air - conditioning , 25 have power windows , and 12 have both air - conditioning and power windows . how many of the cars on the lot have neither air - conditioning nor power windows ? 
Options: a ) 15 , b ) 8 , c ) 10 , d ) 2 , e ) 18

Ex Output:
d


Ex Input:
Problem: the ratio of three numbers is 1 : 2 : 3 and the sum of their squares is 2016 . the sum of the numbers is ? 
Options: a ) a ) 10 , b ) b ) 12 , c ) c ) 15 , d ) d ) 14 , e ) e ) 9

Ex Output:

b