Task: Question Answering
Input (English): Problem: in a rectangular coordinate system , what is the area of a rectangle whose vertices have the coordinates ( - 9 , 1 ) , ( 1 , 1 ) , ( 1 , - 8 ) and ( - 9 , - 8 ) ? 
Options: a ) 72 , b ) 180 , c ) 70 , d ) 90 , e ) 140
Output (English): d