Task: Question Answering
Input (English): Problem: in may , the groundskeeper at spring lake golf club built a circular green with an area of 80 π square feet . in august , the groundskeeper doubled the distance from the center of the green to the edge of the green . what is the total area of the renovated green ? 
Options: a ) 160 π , b ) 320 π , c ) 400 π , d ) 540 π , e ) 640 π
Output (English): b