Which sequence of transformations confirms congruence by mapping shape I onto shape II?
A. a reflection across the x-axis and then a translation 15 units left
B. a 90° clockwise rotation about the origin and then a translation 25 units up
C. a 90° counterclockwise rotation about the origin and then a translation 10 units left
D. a 180° rotation about the origin and then a translation 10 units right
