Two similar triangles are shown on the coordinate grid:

a coordinate plane is shown. triangle abc has vertices a at negative 3 comma 2, b at negative 1 comma 0, and c at negative 2 comma negative 1. triangle a prime b prime c prime has vertices a prime at 6 comma 4, b prime at 2 comma 0, and c prime at 4 comma negative 2.

which set of transformations has been performed on triangle abc to form triangle a′b′c′? (4 points)

dilation by a scale factor of 4 followed by reflection about the x-axis

dilation by a scale factor of 2 followed by reflection about the x-axis

dilation by a scale factor of 4 followed by reflection about the y-axis

dilation by a scale factor of 2 followed by reflection about the y-axis