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

Input: Consider Input: Problem: how many different positive integers are factors of 64 ?
Options: a ) 10 , b ) 12 , c ) 14 , d ) 16 , e ) 18

Output: d

Input: Consider Input: Problem: if 75 percent of a class answered the first question on a certain test correctly , 35 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 ) ( 8 ) 20 % , c ) 30 % , d ) 50 % , e ) 65 %

Output: c

Input: Consider Input: Problem: a class has a ratio of 3 : 6 : 7 of children with red hair , blonde hair and black hair respectively . if the class has 9 kids with red hair , how many kids are in the class ?
Options: a ) 99 , b ) 48 , c ) 16 , d ) 22 , e ) 60
Output: b