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': 'An antibioma is \nSelect and explain. \nA. An all powerful antibiotic, B. An antibiotic contaminant, C. A malignant tumour caused by an antibiotic, D. An excess mass of fibrous tissue around an abscess, persistently treated by excessive or partly sterilized antibiotic', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]