Polygon pqrst shown below is dilated with a scale factor of 3, keeping origin as the center of dilation. which statement about polygon pqrst and its image after dilation, polygon p'q'r's't', is correct? select one:
a. the length of side pt is equal to the length of side p't'.
b. the measure of angle t is equal to the measure of angle t'.
c. the length of diagonal rt is equal to the length of diagonal r't'.
d. the measures of angle p and angle p' are in the ratio 1: 3.