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': 'Which bone tumour arises from the epiphysis - \nSelect and explain. \nA. Osteogenic sarcoma, B. Ewing sarcoma, C. Osteoclastoma, D. Osteoma', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Epiphyseal tumors \n\nChondroblastoma\nGiant cell tumor (osteoclastorna)\nClear cell chondrosaroma', 'role': 'assistant'}]