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 the odontoblastic layer the following connections is/are found 
Select and explain. 
A. Zona adherens, B. Gap junctions, C. Zonula occludens, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None