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
Least pain sensitivity in oral cavity is in which mucosa 
Select and explain. 
A. Gingiva, B. Buccal mucosa, C. Labial mucosa, D. Dorsal mucosa of tongue
B: Buccal mucosa
Answer: B: Buccal mucosa 
Explanation: None