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

Ex Input:
Problem: among 600 students , 56 % study sociology , 44 % study mathematics and 40 % study biology . if 30 % of students study both mathematics and sociology , what is the largest possible number of students who study biology but do not study either mathematics or sociology ? 
Options: a ) 30 , b ) 90 , c ) 120 , d ) 172 , e ) 180

Ex Output:
e


Ex Input:
Problem: log 3 n + log 12 n what is 3 digit number n that will be whole number 
Options: a ) 6291 , b ) 7292 , c ) 1728 , d ) 1929 , e ) 1727

Ex Output:
c


Ex Input:
Problem: how many odd integers from 1 to 50 ( both inclusive ) have odd number of factors ? 
Options: a ) 13 , b ) 4 , c ) 5 , d ) 6 , e ) 7

Ex Output:

b