Which sequence of transformations produced the image?

A:a counter-clockwise rotation 90° about the origin followed by a translation 2 units to the right and 1 unit up

B:a translation 2 units to the right and 1 unit up followed by a counter-clockwise rotation 90° about the origin

C:a clockwise rotation 90° about the origin followed by a reflection across the y-axis

D:a reflection across the y-axis followed by a clockwise rotation 90° about the origin
The correct answer is B