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: Surgery
[{'content': '39.Which one of the following organisms is not associatied with synergistic gangrene: \nSelect and explain. \nA. Esherichia, B. Staphylococcus, C. Clostridium, D. Peptostreptococcus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans is c i.e. Clostridium', 'role': 'assistant'}]