Task: Question Answering
Input (English): Problem: two letters from the word barkhint are selected at random . what is the probability that at least one of the selected letters is a consonant ? 
Options: a ) 30 / 28 , b ) 40 / 28 , c ) 25 / 28 , d ) 27 / 28 , e ) 32 / 28
Output (English): d