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
During periradicular surgery bone is removed with? 
Select and explain. 
A. Round burr, B. Double inverted cone burr, C. Fissure burr, D. Taper Burr
A: Round burr
Answer: A: Round burr 
Explanation: None