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: ENT
Identity the lesion of oral cavity 
Select and explain. 
A. Erythroplakia, B. Leukoplakia, C. Submucous fibrosis, D. Lichen planus
B: Leukoplakia
Answer: B: Leukoplakia 
Explanation: None