Which sequence of transformations maps triangle RST onto triangle NPQ to show that they are similar?

a dilation with scale factor 2 centered at the origin followed by a translation 3 units to the right

a translation 3 units to the left followed by a dilation with scale factor-centered at the origin

a translation 4 units to the right and 2 units up followed by a dilation with scale factor 2 centered at the origin

a dilation with scale factor - centered at the origin followed by a translation 4 units to the left and 2 units down​