Which of the following statements regarding cilia is not correct

Options

A. Cilia contain an outer of nine doublet microtubules surrounding two single microtubules.
B. The organized beating of cilia is controlled by fluxes of `Ca^(2+)` across the membrane.
C. Cilia are hair-like cellular appendages.
D. Microtubules of cilia are composed of tubulin.

Answer

B