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
Fourth generation meth-acrylate based resin sealer include? 
Select and explain. 
A. Endorez, B. Resilon, C. Hydron, D. Real Seal E
D: Real Seal E
Answer: D: Real Seal E 
Explanation: None