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
Which	of the following is	urethane	dimethacrylate
(UDMA) resin based endosealer? 
Select and explain. 
A. Endorez, B. Real seal, C. Raeko sealer, D. Tubli seal
A: Endorez
Answer: A: Endorez 
Explanation: None