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

Ex Input:
Problem: the ratio of three numbers is 2 : 3 : 5 and their sum is 150 . the second number of the three numbers is ? 
Options: a ) 24 , b ) 26 , c ) 27 , d ) 29 , e ) 45

Ex Output:
e


Ex Input:
Problem: kelly and chris are moving into a new city . both of them love books and thus packed several boxes with books . if chris packed 60 % of the total number of boxes , what was the ratio of the number of boxes kelly packed to the number of boxes chris packed ? 
Options: a ) 4 / 3 , b ) 2 / 3 , c ) 1 / 3 , d ) 3 / 4 , e ) 1 / 4

Ex Output:
b


Ex Input:
Problem: the probability that event a occurs is 0.4 , and the probability that events a and b both occur is 0.25 . if the probability that either event a or event b occurs is 0.6 , what is the probability that event b will occur ? 
Options: a ) 0.05 , b ) 0.15 , c ) 0.45 , d ) 0.5 , e ) 0.55

Ex Output:

c