Two similar triangles below are shown on the coordinate grid: 1M LU OT FEE Which set of transformations has been performed on triangle MNO to form triangle M'NO? O Dilation by a scale factor of 2 followed by reflection across the x-axis S E O Dilation by a scale factor of 2 followed by reflection across the x-axis O Dilation by a scale factor of 2 followed by reflection across the y-axis mielone Dilation by a scale factor of 1 followed by reflection across the y-axis 2​