Two similar triangles are shown on the coordinate grid: which set of transformation has been performed on triangle ABC to form triangle A’B’C. 1) dilation by a scale factor of 4 followed by reflection about the x-axis 2) dilation by a scale factor of 2 followed by reflection about the x-axis 3) dilation by a scale factor of 4 followed by reflection about the y-axis 4) dilation by a scale factor of 2 followed by reflection about the y-axis