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 fluoride content of fluor protector varnish is: 
Select and explain. 
A. 2.26%, B. 0.70%, C. 2.70%, D. 0.30%
B: 0.70%
Answer: B: 0.70% 
Explanation: None