Task: Question Answering
Input (English): Problem: at a particular graduation party with 220 guests , 70 % of the guests brought gifts , and 40 % of the female guests brought gifts . if 12 males did not bring gifts to the party , how many females did bring gifts ? 
Options: a ) 18 , b ) 36 , c ) 42 , d ) 68 , e ) 70
Output (English): b