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': "All are features of Fournier's gangrene except - \nSelect and explain. \nA. Testicles are involved, B. Obliterative arteritis seen, C. Haemolytic streptococci, E.coli, Staphylococci, Cl. welchi can be isolated, D. Necrotising fascitis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]