Task: Question Answering
Input (English): Problem: 50 percent of andrea ' s living room floor is covered by a carpet that is 4 feet by 9 feet . what is the area of her living room floor ? 
Options: a ) 14.4 , b ) 180 / 7 , c ) 50.4 , d ) 64.8 , e ) 90
Output (English): d