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: Microbiology
[{'content': 'Injection abscesses due to use of contaminated vaccines occurs in infections caused by \nSelect and explain. \nA. M. kansasii, B. M. ulcerans, C. M. chelonae, D. M. smegmatis', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]