Which of these sequences of transformations would not return a shape to its original position?
A. Translate 3 units up, then 3 units down.
B. Reflect over the y-axis , then reflect over the y-axis again.
C. Translate 1 unit to the right, then 4 units to the left, then 3 units to the right.
D. Rotate 90\circ∘ counterclockwise around the origin , then rotate 270\circ∘ counterclockwise around the origin again.