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
Epithelium of oral mucous membrane is 
Select and explain. 
A. Keratinized, B. Non keratinized, C. Ortho, para and non keratinized, D. Only para keratinized
C: Ortho, para and non keratinized
Answer: C: Ortho, para and non keratinized 
Explanation: None