The correct answer that shows the truth about the parallelogram is P'Q' = 3PQ
How to get the scale of the parallelogram
The shape PQRS is a parallelogram in the diagram.
After applying a dilation centered at point O with a scale factor of 3, the image of PQRS becomes P'Q'R'S'.
We have to note that in a quadrilateral such as this, the dilation of the angles would not change the shapes angles but the side values of this shape would have to be changed.
The question said that the scale factor that the shape has is 3
Hence we would have:
P'Q' = 3PQ
The correct option of the question is B