What Might Be the Advantage of Both the Cochlea and Semicircular

What might be the advantage of both the cochlea and semicircular canals being curved?

A) Hair cell receptor sensitivities are best suited to curved structures.
B) Curved structures have more surface area than structures of other shapes would within the confines of the inner ear.
C) Endolymph flow is more dynamic (and the least static) in curved structures.
D) Curved structures are most susceptible to vibrational disturbances of sound or angular rotation.
E) Curved structures are the least susceptible to debris and other particulate matter from interfering with their functions.