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

Ex Input:
Problem: a container holding 12 ounces of a solution that is 1 part alcohol to 2 parts water is added to a container holding 12 ounces of a solution that is 1 part alcohol to 3 parts water . what is the ratio of alcohol to water in the resulting solution ? 
Options: a ) 2 : 5 , b ) 3 : 7 , c ) 3 : 5 , d ) 4 : 7 , e ) 7 : 17

Ex Output:
e


Ex Input:
Problem: if 75 percent of a class answered the first question on a certain test correctly , 25 percent answered the second question on the test correctly , and 20 percent answered neither of the questions correctly , what percent answered both correctly ? 
Options: a ) 10 % , b ) 20 % , c ) 30 % , d ) 50 % , e ) 65 %

Ex Output:
b


Ex Input:
Problem: at a party , 13 guests brought wine and 14 guests brought beer . if exactly 11 guests brought only one of the two types of drinks , how many guests brought both types of drinks ? 
Options: a ) 5 , b ) 6 , c ) 7 , d ) 8 , e ) 14

Ex Output:

d