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

Input: Consider 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

Output: d


Input: Consider Input: Problem: the ratio of number of boys and girls in a school is 2 : 5 . if there are 350 students in the school , find the number of girls in the school ? 
Options: a ) 150 , b ) 250 , c ) 300 , d ) 370 , e ) 280

Output: b


Input: Consider Input: Problem: if 0.4 of a number is equal to 0.07 of another number , the ratio of the numbers i 
Options: a ) 2 : 3 , b ) 7 : 40 , c ) 3 : 20 , d ) 20 : 3 , e ) none


Output: b