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: Surgery
[{'content': 'Which is not true about carbuncle? \nSelect and explain. \nA. Infective gangrene of subcutaneous tissue, B. Caused by staphylococcus, C. Diabetics are more prone, D. Caused by streptococcus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: CARBUNCLE\nWord meaning of carbuncle is charcoal.\n\nIt is an infective gangrene of skin and subcutaneous tissue\nStaphyIococcs aureus is the main culprit.\nCommon site of occurrence is nape of the neck and back. Skin\xa0in this area is thick. Condition also can occur in shoulder, cheek.\xa0hand. forearm.\nIt is common in diabetics and after forty years of age.\nIt is common in males.', 'role': 'assistant'}]