Which of the following is NOT correct regarding ciliary motion?

A)ATP-driven sliding or walking of dyneins occurs along microtubules.
B)Axonemes are surrounded by plasma membrane that is continuous with the plasma membrane of the cell.
C)Dynein molecules bridge between microtubules,alternating their "walking" along both bridging microtubules.
D)The result is a bending motion of the axoneme and subsequent bending of the cilia.