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: Dental
'POTABLE WATER' is one which: 
Select and explain. 
A. Is safe drinking, B. Can be carried from one place to another, C. Found within 5 meters within the surface of earth, D. None of the above
A: Is safe drinking
Answer: A: Is safe drinking 
Explanation: None