Which of the Following Statements Is True Concerning the Anatomy

Which of the following statements is true concerning the anatomy and physiology of the mouth?

A) Stensen ducts are located in the lower oral cavity and drain saliva.
B) The hard palate is the largest and strongest bone of the face.
C) The soft palate is responsible for closing off the nasal passages during the act of swallowing.
D) Gingiva is the mucous membrane epithelium lining inside of the mouth.