Task: Question Answering
Input (English): Problem: find the area between two concentric circles defined by x 2 + y 2 - 2 x + 4 y + 1 = 0 x 2 + y 2 - 2 x + 4 y - 11 = 0 
Options: a ) 11 pi , b ) 12 pi , c ) 13 pi , d ) 14 pi , e ) 15 pi
Output (English): b