Definition: In this task, you need to provide the correct option for a given problem on probability from the provided options.
Input: Problem: the probability that a number selected at random from the first 50 natural numbers is a composite number is 
Options: a ) 17 / 26 , b ) 17 / 25 , c ) 17 / 20 , d ) 17 / 22 , e ) 17 / 21
Output:
b