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': 'What is the best management of contaminated wound with necrotic material? \nSelect and explain. \nA. Tetanus toxoid, B. Gas gangrene serum, C. Debridement, D. Broad spectrum antibiotics', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Contaminated wound with necrotic material is best treated by debridement to prevent development of tetanus.', 'role': 'assistant'}]