When the reverse light is broken, how should you indicate that you are going to reverse?

When the reverse light is broken, how should you indicate that you are going to reverse?
A)Moving the arm up and down.
B)Warning with the horn.
C)With the arm extended and the palm of the hand facing backwards.Correct
# Manual Reversing Signal When the reverse light is broken, you must use a **clear and visible hand signal**. The correct way is to **extend your arm backwards with the palm of your hand open and facing backwards**, as if rejecting something. This signal warns drivers and pedestrians of your intention to reverse in a way they can clearly see.