Task: Question Answering
Input (English): Problem: you cook a pot of beef stew for you and your roommate . normally it lasts 7 days between the two of you . if 3 guests are now staying with you and your roommate , how many days will the beef stew now last if everyone eats it ? 
Options: a ) 2.8 , b ) 1 , c ) 3.5 , d ) 14 , e ) 1.6
Output (English): a