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': 'A histologic evidence of widespread formation of globular hypocaLcified dentin and puLp horns reaching the dentinoenamel junction, absence of lamina dura around the tooth in radiograph are the characteristic features of \nSelect and explain. \nA. Vitamin-D resistant rickets, B. Hypophosphatasia, C. Hypervitaminosis-A, D. Vitamin-A deficiency', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]