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': "Garre's osteomyelitis commonly involve - \nSelect and explain. \nA. Jaw, B. Femur, C. Ribs, D. Small bones of hand", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Sclerosing osteomyelitis of Garre typically develops in the jaw and is associated with an extensive new bone formation that obscures much of the underlying osseous structure.', 'role': 'assistant'}]