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: Radiology
[{'content': 'Fraying and cupping of metaphyses of long bones in a child does not occur in – \nSelect and explain. \nA. Rickets, B. Lead poisoning, C. Metaphyseal dysplasia, D. Hypophosphatasia', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rickets, metaphyseal dysplasia, scurvy and hypophosphatasia can cause cupping and fraying of metaphysics.', 'role': 'assistant'}]