This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biomedical Waste Management, Subject name: Social & Preventive Medicine
[{'content': 'Most satisfactory method of refuse disposal is: \nSelect and explain. \nA. Dumping, B. Controlled tipping, C. Incineration, D. Manure pits', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Refuse disposal: Sanitary landfill (Controlled tipping) laying of dry & condensed refuse in layers with inveing eah paitions & covering, followed by mechanical compression (most satisfactory method when suitable land is available). Trench method Ramp method Area method', 'role': 'assistant'}]