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: Social & Preventive Medicine
[{'content': '“3-D” means in hospital waste management is \nSelect and explain. \nA. Destruction, deep burial, drainage, B. Discard, disinfection, drainage, C. Disinfection, disposal, drainage, D. Destruction, deep burial, disposal', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]