The figure shows two triangles on a coordinate grid:

What set of transformations is performed on triangle ABC to form triangle A′B′C′? (1 point)

a
A 180 degree counterclockwise rotation about the origin followed by a translation 5 units up

b
A 270 degree counterclockwise rotation about the origin followed by a translation 5 units up

c
A translation 5 units to the left followed by a 180 degree counterclockwise rotation about the origin

d
A translation 5 units to the left followed by a 270 degree counterclockwise rotation about the origin