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
Material which can be used for root end filling: 
Select and explain. 
A. Dieket, B. IRM, C. Super EBA, D. All of the above.
D: All of the above.
Answer: D: All of the above. 
Explanation: None