PLEASE HELP
Polygon ABCD with vertices at A(1,-1) B(3,-1), C(3,-2) and D(1-2) is dilated to create polygon ABCD with vertices at Aā(2,-2), B(6,-2), Cā(6,-4) and Dā(2,-4). Determine the scale factor used to create the image
A. 3
B. 2
C. 1/2
D. 1/3