Task: Question Answering
Input (English): Problem: in may , the grounds keeper at spring lake golf club built a circular green with an area of 64 π square feet . in august , he 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 ) 100 pi , b ) 144 pi , c ) 196 pi , d ) 256 pi , e ) 78
Output (English): d