Problem: A volunteer is holding a rapidly rotating horizontal bicycle wheel with two handles as shown. The volunteer rotates the bicycle wheel so that the upper hand holding it becomes the lower hand. What effect does this have?
Answer options:
A: The angular momentum of the wheel is unchanged in both magnitude and direction.
B: The angular momentum of the wheel changed in direction, but its magnitude is about the same.
C: The angular momentum of the wheel changed in direction and magnitude.
D: The angular momentum of the wheel changed in magnitude, but its direction is about the same.