The Combining Form Staped/o Refers to the Anatomic Structure That

The combining form staped/o refers to the anatomic structure that is the

A) passage between the middle ear and the pharynx.
B) semitransparent membrane that separates the external auditory canal and the middle ear cavity.
C) one of three bones of the middle ear; shaped like a stirrup and connected to the oval window.
D) sensory organ of balance containing receptors and endolymph.