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: Dental
[{'content': 'Mycobacterium causing skin ulcer – a) M. smegmatisb) M. scrofulaceumc) M. ulceransd) M. fortuitume) M. marinum \nSelect and explain. \nA. abd, B. acd, C. bde, D. cde', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Mycobacteria causing skin infections\n\nPost-trauma abscess → M.chelonae, M.fortuitum, M.terrae\nSwimming pool granuloma → M.marinum(M. Balanei)\nBuruli ulcer → M.ulcerans\nLupus vulgaris → M.tuberculosis\nScrofuloderma → M.tuberculosis\xa0\nAbscess and granuloma may break to fonn an ulcer.\nSo, all the organism in above list can cause skin ulcer.', 'role': 'assistant'}]