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
Which of the following is considered an adequate water supply/head/day – 
Select and explain. 
A. 50–150 L, B. 150–200 L, C. 200–250 L, D. 100–150 L
B: 150–200 L
Answer: B: 150–200 L 
Explanation: None