Task: Question Answering
Input (English): Problem: in a group of 8 semifinalists , all but 2 will advance to the final round . if in the final round only the top 3 will be awarded medals , then how many groups of medal winners are possible ? 
Options: a ) 20 , b ) 56 , c ) 120 , d ) 560 , e ) 720
Output (English): b