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

Input: Consider Input: Problem: of the 65 house in a development , 50 have a two - car garage , 40 have an in - the - ground swimming pool , and 35 have both a two - car garage and an in - the - ground swimming pool . how many houses in the development have neither a two - car garage nor an in - the - ground swimming pool ? 
Options: a ) 10 , b ) 15 , c ) 20 , d ) 25 , e ) 30

Output: a


Input: Consider Input: Problem: what number has a 5 : 1 ratio to the number 9 ? 
Options: a ) 45 , b ) 50 , c ) 88 , d ) 52 , e ) 12

Output: a


Input: Consider Input: Problem: a man invests some money partly in 9 % stock at 96 and partly in 12 % stock at 120 . to obtain equal dividends from both , he must invest the money in the ratio : 
Options: a ) 3 : 4 , b ) 3 : 5 , c ) 4 : 5 , d ) 16 : 15 , e ) none


Output: d