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
[{'content': "True about zone of Weil is \nSelect and explain. \nA. It's cell rich zone, B. Absent in primary and tertiary dentin, C. Contains myelinated nerve fibres, D. Does not contain capillaries", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]