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
Fluoride safe dose is 
Select and explain. 
A. 8-16 mg F/kg body weight, B. 16-32 mg F/kg body weight, C. 30-64 mg F/kg body weight, D. 12-30 mg F/kg body weight
A: 8-16 mg F/kg body weight
Answer: A: 8-16 mg F/kg body weight 
Explanation: None