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 burs is used for developing
chamfer margins? 
Select and explain. 
A. Flat ended, tapered diamond cylinder, B. Round ended, tapered diamond cylinder, C. Twelve fluted carbide burs, D. End cutting burs
B: Round ended, tapered diamond cylinder
Answer: B: Round ended, tapered diamond cylinder 
Explanation: None