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

Input: Consider Input: Problem: in a group of 28 junior high school students , 7 take french , 10 take spanish , and 2 take both languages . the students taking both french and spanish are not counted with the 7 taking french or the 10 taking spanish . how many students are not taking either french or spanish ? 
Options: a ) 7 , b ) 6 , c ) 9 , d ) 4 , e ) 8

Output: c


Input: Consider Input: Problem: the ratio of three numbers is 4 : 2 : 5 and their sum is 121 . the second number of the three numbers is ? 
Options: a ) 22 , b ) 26 , c ) 27 , d ) 29 , e ) 30

Output: a


Input: Consider Input: Problem: an urn contains 6 red , 5 blue and 2 green marbles . if 2 marbles are picked at random , what is the probability that both are red ? 
Options: a ) 6 / 13 , b ) 5 / 26 , c ) 6 / 26 , d ) 9 / 26 , e ) 10 / 27


Output: b