Which sequence of transformations proves congruence from parallelogram EFGH to parallelogram
E'F'G'H'?
A. Reflect across the x-axis, then rotate 180°
B. Rotate 180°, then reflect across the x-axis
C. Translate 12 units down, rotate 90° clockwise, then reflect across the y-axis
D. Rotate 90° counterclockwise, reflect across the y-axis, then reflect across the x-axis