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
The daily recommended dose of the fluoride for the children below 3 years is 
Select and explain. 
A. Less or equal to 0.5 mg, B. 0.5 to 0.7 mg, C. 1.0 to 1.5 mg, D. None of the above
A: Less or equal to 0.5 mg
Answer: A: Less or equal to 0.5 mg 
Explanation: None