What set of transformations is performed on triangle ABC to form triangle A′B′C′? -A translation 5 units down, followed by a 180-degree counterclockwise rotation about the origin
-A translation 5 units down, followed by a 270-degree counterclockwise rotation about the origin
-A 180-degree counterclockwise rotation about the origin, followed by a translation 5 units down
-A 270-degree counterclockwise rotation about the origin, followed by a translation 5 units down