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': 'Tunica reaction is seen in - \nSelect and explain. \nA. H. influenzae, B. Plague, C. R. mooseri, D. B. Anthrax', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]