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': 'Naglers reaction is shown by - \nSelect and explain. \nA. Cl. tetani, B. Cl. botulinum, C. Cl. perfringens, D. Cl. septicum', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Cl. perfringenes", 'role': 'assistant'}]