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: Pathology
[{'content': 'The histological appearance of "lava following around boulders in dentin dysplasia" suggests \nSelect and explain. \nA. Attempt to repair the defective dentin, B. Abrupt arrest to dentin formation in crown, C. Abnormal dentin formation in a disorganized fashion, D. Cascades of dentin to form root', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]