Which sequence of transformations shows that triangle A is congruent to triangle B?
A: Translate it 10 units to the left,and then rotate it 90 degrees clockwise about the origin
B: Reflect it over the x-axis, and then reflect it over the y-axis
C: Rotate it 180 degrees about the origin, and then translate it 10 units to the right
D: Rotate it 180 degrees about the origin, and then translate it 10 units to the left