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': 'Characteristic location of Ewings sarcoma is? \nSelect and explain. \nA. Epiphysis, B. Metaphysis, C. Diaphysis, D. Any of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Diaphysis is the characteristic location of Ewings sarcoma.', 'role': 'assistant'}]