Definition: In this task, you need to answer the given multiple-choice question on the general math. Classify your answers into 'a', 'b', 'c', 'd', and 'e'.
Input: Problem: if a number n is chosen at random from the set of two - digit integers whose digits are both prime numbers , what is the probability w that n is divisible by 3 ?
Options: a ) 1 / 3 , b ) , c ) 9 / 25 , d ) 5 / 16 , e ) 0
Output:
d