Which sequence of transformations will result in an image that maps onto itself
A. Reflect across the x-axis, and then reflect again over the x-axis.
B. Rotate 90 degrees counterclockwise about the origin, and then
translate up 2 units.
C. Reflect across the x-axis, and then reflect across the y-axis.
D. Rotate 90 degrees counterclockwise about the origin, and then
reflect across the x-axis.