This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bone Tumour, Subject name: Orthopaedics
[{'content': 'Chondroblastoma most commonly occurs in : \nSelect and explain. \nA. Metaphysis, B. Diaphysis, C. Epiphysis, D. Medullary cavity', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. is \'c\' ie Epiphysis Apley\'s orthopedics writes - "Chondroblastoma is one of the few lesion to appear primarily in the epiphysis"', 'role': 'assistant'}]