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 the inner surface of the gingival sulcus: 
Select and explain. 
A. Has no rete pegs, B. Has prominent rete pegs, C. Is keratinized, D. Is para-keratinized
A: Has no rete pegs
Answer: A: Has no rete pegs 
Explanation: None