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': 'The disposal of night soil and refuse is by? \nSelect and explain. \nA. Chemical sterilization, B. Burning, C. Composting, D. Any of the above', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Composting", 'role': 'assistant'}]