Which transformations could be performed to show that ΔABC is similar to ΔA'B'C'?
a) A reflection over the x-axis, then a dilation by a scale factor of 3
b) A reflection over the x-axis, then a dilation by a scale factor of one-third
c) A 180° rotation about the origin, then a dilation by a scale factor of 3
d) A 180° rotation about the origin, then a dilation by a scale factor of one-third