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': 'Gas gangrene is caused by all except? \nSelect and explain. \nA. Cl. histolyticum, B. Cl. novyi, C. Cl. septicum, D. Cl. sporogenes', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Cl. sporogenes", 'role': 'assistant'}]