The figure shows two triangles on the coordinate grid: (image attached)
What set of transformations is performed on triangle ABC to form triangle A′B′C′? (5 points)

Select one:
a. A translation 5 units up, followed by a 270-degree counterclockwise rotation about the origin
b. A 270-degree counterclockwise rotation about the origin, followed by a translation 5 units up
c. A 180-degree counterclockwise rotation about the origin, followed by a translation 5 units to the right
d. A translation 5 units to the right, followed by a 180-degree counterclockwise rotation about the origin