Define otoliths

Define otoliths.

A) They are tiny auditory bones that propagate sound waves to the internal ear.
B) They are small cellular extensions that detect changes in the flow of endolymph.
C) They are flexible,gelatinous structures that are found in each ampulla of the semicircular ducts.
D) They are the extensions of hair cells embedded in the ampullary cupula.
E) They are densely packed calcium carbonate crystals that sit upon the gelatinous otolithic membrane in the maculae.