The figure shows two similar triangles on a coordinate grid:
which set of transformations have been performed on triangle abc to form triangle a'b'c'?
a.)dilation by a scale factor of 2 followed by reflection about the x-axis
b.)dilation by a scale factor of 4 followed by reflection about the x-axis
c.)dilation by a scale factor of 2 followed by reflection about the y-axis
d.)dilation by a scale factor of 4 followed by reflection about the y-axis