PQR is dilated with the center of dilation at the origin and a scale factor of 0.5 to obtain P'Q'R. The triangles corresponding angles are_____ and their corresponding sides are _____ therefore, the triangles are _____
A. congruent; proportional; similiar
B. congruent; congruent; congruent;
C. Proportional; proportional; similiar
D. Proportional; congruent; congruent