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': "Increased radioisotopes are seen in all of the following except: \nSelect and explain. \nA. Primary bone tumour, B. Osteomyelitis, C. Paget's disease, D. Pseudo ahrosis", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. Pseudo ahrosis', 'role': 'assistant'}]