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

Ex Input:
Problem: the ratio of the number of females to males at a party was 1 : 2 but when 7 females and 7 males left , the ratio became 1 : 3 . how many people were at the party originally ?
Options: a ) 28 , b ) 32 , c ) 36 , d ) 42 , e ) 50

Ex Output:
d

Ex Input:
Problem: log 3 n + log 15 n what is 3 digit number n that will be whole number
Options: a ) 3375 , b ) 7292 , c ) 8291 , d ) 3929 , e ) 2727

Ex Output:
a

Ex Input:
Problem: the h . c . f of two numbers is 23 and the other two factors of their l . c . m are 12 and 13 . the larger of the two numbers is :
Options: a ) 299 , b ) 278 , c ) 322 , d ) 231 , e ) 121

Ex Output:
a