Task: Question Answering
Input (English): Problem: in a rectangular coordinate system , what is the area of a rectangle whose vertices have the coordinates ( - 8 , 1 ) , ( 1 , 1 ) , ( 1 , - 7 and ( - 8 , - 7 ) ? 
Options: a ) 144 , b ) 36 , c ) 72 , d ) 56 , e ) 112
Output (English): c