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
Most common site of oral leukoplakia is 
Select and explain. 
A. angle of mouth, B. cheek mucosa, C. Soft palate, D. Gingiva
B: cheek mucosa
Answer: B: cheek mucosa 
Explanation: None