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

Input: Consider Input: Problem: of the 200 stamps in a collection , 90 are foreign and 60 are more than 10 years old . if 20 stamps are both foreign and more than 10 years old , how many stamps are neither foreign nor more than 10 years old ? 
Options: a ) 50 , b ) 70 , c ) 100 , d ) 130 , e ) 150

Output: b


Input: Consider Input: Problem: in a ratio which is equal to 3 : 4 , if the antecedent is 12 , then the consequent is ? 
Options: a ) 12 , b ) 16 , c ) 20 , d ) 22 , e ) 25

Output: b


Input: Consider Input: Problem: the ratio of spinsters to cats is 2 to 7 . if there are 55 more cats than spinsters , how many spinsters are there ? 
Options: a ) 20 , b ) 21 , c ) 22 , d ) 23 , e ) 24


Output: c