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
At the CEJ, which of the following occurs 
Select and explain. 
A. Cementum meets enamel, B. Cementum overlaps enamel, C. Cementum does not meet enamel, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None