Which of the following is a true statement? A. A translation preserves orientation, but not congruence.
A. , A translation preserves orientation, but not congruence., ,

B. A 90° counterclockwise rotation about the origin preserves congruence and orientation.
B. , , , A 90° counterclockwise rotation about the origin preserves congruence and orientation.

C. A reflection preserves congruence, but not orientation.
C. , A reflection preserves congruence, but not orientation., ,

D. A 180° rotation counterclockwise about the origin preserves orientation, but not congruence.