Identify the incorrect statement about the anatomy of the mouth and chewing: a. The oral cavity communicates with the outside through the oral orif...

Identify the incorrect statement about the anatomy of the mouth and chewing:
a. The oral cavity communicates with the outside through the oral orifice and with the pharynx through the isthmus of the fauces.
b. The oral cavity contains teeth and tongue.
c. The oral vestibule is formed by the anterior, posterior, and lateral walls and the inferior wall.
d. The oral cavity is lined with skin and mucosa.
e. The tongue is a fixed or base part attached to the velum palatinum and epiglottis.

a. a and b are incorrect.
b. b and e are incorrect.
c. c and d are incorrect.
d. d and e are incorrect.
e. e and a are incorrect.