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

[EX Q]: Problem: what number has a 3 : 4 ratio to the number 400 ?
Options: a ) 130 , b ) 100 , c ) 200 , d ) 300 , e ) 120
[EX A]: d

[EX Q]: Problem: the number of people who purchased book a is twice the number of people who purchased book b . the number of people who purchased both books a and b is 500 , which is twice the number of people who purchased only book b . what is the number of people b who purchased only book a ?
Options: a ) 250 , b ) 500 , c ) 750 , d ) 1000 , e ) 1500
[EX A]: d

[EX Q]: Problem: in a certain town , the ratio of ny yankees fans to ny mets fans is 3 : 2 , and the ratio of ny mets fans to boston red sox fans is 4 : 5 . if there are 330 baseball fans in the town , each of whom is a fan of exactly one of those three teams , how many ny mets fans are there in this town ?
Options: a ) 72 , b ) 88 , c ) 95 , d ) 120 , e ) 135
[EX A]:
b