This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
lining mucosa is found over all of the following surface except: 
Select and explain. 
A. Cheeks., B. Floor of the mouth., C. Ventral surface of tongue., D. Dorsum of tongue.
D: Dorsum of tongue.
Answer: D: Dorsum of tongue. 
Explanation: Dorsum of the tongue is specialized mucosa