Elephants Hear Sounds That Are Too Low for Humans to Hear.This

Elephants hear sounds that are too low for humans to hear.This sensitivity is primarily due to the differences in the _____.

A) arrangement and shape of the ossicles
B) flexibility of the basilar membrane in the cochlea
C) size and flexibility of the tympanic membrane (eardrum)
D) size and shape of the outer ear
E) All of the above apply.