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': 'Under the Accelerated Rural Water Supply Programme, recommended per capita daily water supply is: \nSelect and explain. \nA. 20 litres, B. 30 litres, C. 40 litres, D. 50 litres', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Under the Accelerated Rural Water Supply Programme, recommended per capita daily water supply is 40 litres and a public stand post or hand pump for 250 persons. Ref: Health policies and programmes in India, D.K. Taneja 11th edition page: 396', 'role': 'assistant'}]