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

Input: Consider Input: Problem: in a sports club with 30 members , 17 play badminton and 18 play tennis and 2 do not play either . how many members play both badminton and tennis ? 
Options: a ) 7 , b ) 8 , c ) 9 , d ) 10 , e ) 11

Output: a


Input: Consider Input: Problem: find the number of zeroes at the end of 50 ! 
Options: a ) 10 , b ) 11 , c ) 12 , d ) 13 , e ) 14

Output: c


Input: Consider Input: Problem: the l . c . m of two numbers is 48 . the numbers are in the ratio 2 : 3 . the sum of numbers is ? 
Options: a ) 22 , b ) 67 , c ) 40 , d ) 88 , e ) 11


Output: c