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
The odontoblastic layer histologically 
Select and explain. 
A. Appears 3-5 layer thick., B. Is single layer outlining pulp, C. Is psuedostratified palisade layer, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None