PLZ HELP DUE IN 20 MINS

The figure shows two triangles on a coordinate grid:
What set of transformations is performed on triangle RST to form triangle R′S′T′? (4 points)

a
A 90-degree counterclockwise rotation about the origin followed by a translation 2 units left

b
A 270-degree counterclockwise rotation about the origin followed by a translation 2 units to the right

c
A translation 2 units down followed by a 90-degree counterclockwise rotation about the origin

d
A translation 2 units down followed by a 270-degree counterclockwise rotation about the origin