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': 'Which among the following bone tumours is radio resistant? \nSelect and explain. \nA. Osteosarcoma, B. Fibrosarcoma, C. Melanoma, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Renal cell carcinoma is also relatively radio resistant. Seminoma is highly radio sensitive.', 'role': 'assistant'}]