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
A daily water supply considered adequate to meet the need for all urban domestic purposes is 
Select and explain. 
A. 10 litres per capita, B. 20 litres per capita, C. 40-60 litres per capita, D. 150-200 litres per capita
D: 150-200 litres per capita
Answer: D: 150-200 litres per capita 
Explanation: None