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': 'Per capita allowance of water per day is recommended at \nSelect and explain. \nA. 70-80 lit, B. 80-120 lit, C. 120-150 lit, D. 150-200 lit', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Water supply considered adequate to meet the need for domestic purposes:\nUrban: 150-200 litres per capita per day Rural: 40-60 litres per capita per day\nDaily drinking water requirement: 2-3 litres per capita per day.', 'role': 'assistant'}]