Polygons efgh and e′f′g′h′ are shown on the following coordinate grid:
what set of transformations is performed on efgh to form e′f′g′h′?
a) a translation 1 unit to the right followed by a 90 degrees counterclockwise rotation about the origin
b) a translation 1 unit to the right followed by a 270 degrees counterclockwise rotation about the origin
c) a 270 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the right
d) a 90 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the right