Task: Question Answering
Input (English): Problem: a player holds 13 cards of 4 suits , of which 7 are black and 6 are red . there are twice as many diamonds as spades and twice as many hearts as diamonds . how many clubs does he hold 
Options: a ) 4 , b ) 5 , c ) 6 , d ) 7 , e ) 8
Output (English): c