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
Residual monomer content of chemically activated resins is 
Select and explain. 
A. 0.2% to 0.5%, B. 2% to 5%, C. 0.3% to 0.5%, D. 3% to 5%
D: 3% to 5%
Answer: D: 3% to 5% 
Explanation: None