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: Pathology
MC site for Leukoplakia with high risk of oral cancer is 
Select and explain. 
A. Buccal mucosa, B. Commisures, C. Floor of the mouth, D. Any of the above
C: Floor of the mouth
Answer: C: Floor of the mouth 
Explanation: None