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
Dentin bonding used for amalgam bonding is 
Select and explain. 
A. HEMA, B. 1 META, C. 4 META, D. Not used
C: 4 META
Answer: C: 4 META 
Explanation: None