All of the following are true about the middle ear EXCEPT
A.
The joints between ossicles are synovial
B.
The chorda tympani nerve is related to the lateral wall
C.
The facial nerve passes in a canal situated in the medial and anterior walls
D.
The auditory tube connects the nasopharynx with the anterior wall
E.
Its mucous membrane is supplied by the glossopharyngeal nerve (CN X.