If the Radial Nerve in an Arm Is Cut,the Podia

Multiple Choice

If the radial nerve in an arm is cut,the podia in that arm lose coordination;if the circumoral nerve ring is cut,podia in all arms are uncoordinated and movement ceases.This indicates that

A) the hydraulic system is not involved in movement of tube feet.
B) the radial nerve controls the nerve ring.
C) part of the function of tube feet is hydraulic and part is controlled by the nerve stimulation.
D) water pressure in the hydraulic system is directly controlled by the nervous system.
E) the sea star is aware of the extent it is damaged and can change behaviors to compensate.