Task: Question Answering
Input (English): Problem: the average age of 20 men in the class is 15.6 years . 5 new men join and the new average becomes 14.56 years . what was the average age of 5 new men ? 
Options: a ) 15.5 , b ) 15.4 , c ) 15.25 , d ) 10.4 , e ) 15.6
Output (English): d