Polygon PQRST shown below is dilated with a scale factor of 3, keeping vertex P as the center of dilation: Two polygons are drawn on a coordinate grid. Polygon PQRST has vertices at P 0, negative 3. Q is at 3, negative 2. R is at 3, 1

Which statement about polygon PQRST and its image after dilation, polygon P'Q'R'S'T', is correct? (1 point)

a
The lengths of side RQ and side R'Q' are in the ratio 1:3.

b
The length of diagonal RT is equal to the length of diagonal R'T'.

c
The measures of angle S and angle S' are in the ratio 1:3.

d
The length of side PQ is equal to the length of side P'Q'.