Two similar triangles are shown on the coordinate grid: A coordinate grid is shown from positive 6 to negative 6 on the x-axis and from positive 6 to negative 6 on the y-axis. A triangle MNO is shown with vertex M on ordered pair negative 2, 4, vertex N on ordered pair 0, 0, and vertex O on ordered pair negative 6, negative 2. A triangle M prime N prime O prime is also shown with vertex M prime on ordered pair 1, 2, vertex N prime on ordered pair 0, 0, and vertex O prime on ordered pair 3, negative 1.
Which set of transformations has been performed on triangle MNO to form triangle M′N′O′? (5 points)

Dilation by a scale factor of 2 followed by reflection about the x-axis
Dilation by a scale factor of fraction 1 over 2 followed by reflection about the x-axis
Dilation by a scale factor of 2 followed by reflection about the y-axis
Dilation by a scale factor of fraction 1 over 2 followed by reflection about the y-axis