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: Dental
[{'content': '___________ is anaerobic method of solid waste disposal: \nSelect and explain. \nA. Bangalore method, B. Mechanical composting, C. Controlled tipping, D. Incineration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]