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
In adult teeth, the type of dentin present underlying dentino-enamel junction is 
Select and explain. 
A. Predentin, B. Mantle dentin, C. Interglobular dentin, D. Tertiary dentin
B: Mantle dentin
Answer: B: Mantle dentin 
Explanation: None