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
True about zone of Weil is 
Select and explain. 
A. It's cell rich zone, B. Absent in primary and tertiary dentin, C. Contains myelinated nerve fibres, D. Does not contain capillaries
B: Absent in primary and tertiary dentin
Answer: B: Absent in primary and tertiary dentin 
Explanation: None