Which of the following best describes the folding method used to form an angle bisector?
A. Fold the tracing paper so that the angle's rays lie upon each other.
B. Fold the tracing paper so that the angle's rays form a larger angle.
C. Fold the tracing paper so that the angle's rays form a smaller angle.
D. Fold the tracing paper so that the angle's rays point in the opposite direction.