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
Biomechanism that unites the epithelium to the tooth surface is 
Select and explain. 
A. Internal basal Lamina, B. Junctional epithelium, C. Reduced enamel epithelium, D. Epithelial attachment
A: Internal basal Lamina
Answer: A: Internal basal Lamina 
Explanation: None