When examining the nasal cavity of a patient by spreading the nostril with a speculum, you can confirm that
A.
The opening of the nasolacrimal duct is in the atrium
B.
The opening of the anterior ethmoidal air cells is in the sphenoethmoidal recess
C.
The opentng of the maxillary sinus is in the inferior meatus
D.
The frontonasal duct drains into the semilunar hiatus
E.
The choanae are between the vestibule and the atrium