Task: Question Answering
Input (English): Problem: if 4 people are selected from a group of 5 married couples , what is the probability that none of them would be married to each other ? 
Options: a ) 1 / 33 , b ) 2 / 33 , c ) 1 / 3 , d ) 16 / 33 , e ) 8 / 21
Output (English): e