Polygons abcd and a′b′c′d′ are shown on the following coordinate grid:
what set of transformations is performed on abcd to form a′b′c′d′?
a 90 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the left
a translation 1 unit to the left, followed by a 90 degrees counterclockwise rotation about the origin
a 270 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the left
a translation 1 unit to the left followed by a 270 degrees counterclockwise rotation about the origin