What is the scale factor of the dilation
?M (−3, −3) N(−6, 0) P(0, 0) Q(−3, 6)
M' (−1, −1) N'(−2, 0) P'(0, 0) Q'(−1, 2)

A. −3
B. -1/3
C. 1/3
D. 3