Triangle por with vertices p(3, -6), (6,-9), and r(-15, 3) is dilated by a scale factor of 3 to obtain triangle p'q'r'. which statement best describes triangle p'q'r? (5 points)
it is similar to triangle pqr and has coordinates p'(1, -2), q'(2, -3), and r'(-5,1).
it is congruent to triangle pqr and has coordinates p'(1, -2), q'(2, -3), and r'(-5, 1).
it is similar to triangle pqr and has coordinates p'(9, -18), q'(18, -27), and r'(-45,9).
it is congruent to triangle pqr and has coordinates p (9.-18), q'(18, -27), and r'(-45,9).