What set of transformations is performed on ABCD to form A′B′C′D′? A translation 1 unit to the left followed by a 180-degree counterclockwise rotation about the origin
A translation 1 unit to the right followed by a 180-degree counterclockwise rotation about the origin
A 90-degree counterclockwise rotation about the origin followed by a translation 1 unit to the right
A 90-degree counterclockwise rotation about the origin followed by a translation 1 unit to the left