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: Orthopaedics
[{'content': "Pyle's disease has, \nSelect and explain. \nA. Epiphyseal dysplasia, B. Metaphyseal dysplasia, C. Diaphyseal dysplasia, D. Sclerosis of cortex", 'role': 'user'}, {'content': "Answer: B \nExplanation: Pyle's disease has - Metaphyseal dysplasia.\nEngelmann's disease has - Diaphyseal dysplasia.", 'role': 'assistant'}]