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 formation of which of the following does not represent normal physiological process of dentin formation: 
Select and explain. 
A. Primary and secondary dentin, B. Secondary dentin and circumpulpal dentin, C. Tertiary dentin and sclerotic dentin, D. All of the above
C: Tertiary dentin and sclerotic dentin
Answer: C: Tertiary dentin and sclerotic dentin 
Explanation: None