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

Input: Consider Input: Problem: 99 ! how many zero ' s ? 
Options: a ) 20 , b ) 21 , c ) 22 , d ) 23 , e ) 24

Output: c


Input: Consider Input: Problem: 16 balls are numbered 1 to 16 . a ball is drawn and then another ball is drawn without replacement . what is the probability that both balls have even numbers ? 
Options: a ) 4 / 11 , b ) 5 / 17 , c ) 6 / 25 , d ) 7 / 30 , e ) 8 / 37

Output: d


Input: Consider Input: Problem: what is the least positive integer that is not a factor of 30 ! and is not a prime number ? 
Options: a ) 31 , b ) 32 , c ) 33 , d ) 62 , e ) 64


Output: d