10 points! Please Help! ASAP!!

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
B translation 1 unit to the left, followed by a 90 degrees counterclockwise rotation about the origin
C 270 degrees counterclockwise rotation about the origin followed by a translation 1 unit to the left
D translation 1 unit to the left followed by a 270 degrees counterclockwise rotation about the origin