Triangle rst is congruent to triangle r" s" t". which sequence of transformations could have been used to transform triangle rst to produce triangle r" s" t" ? which of these are the two correct answers?

a. triangle rst was reflected across the x-axis and then rotated 90° clockwise around the origin.
b. triangle rst was reflected across the x-axis and then reflected across the y-axis.
c. triangle rst was rotated counterclockwise 90° around the origin and then reflected across the x-axis.
d. triangle rst was translated 8 units right and then reflected across the x-axis.