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
Preparation of shoulder in anterior tooth is done with: 
Select and explain. 
A. Invested cone bur, B. Plain fissure bur, C. Cross cut fissure bur, D. End cutting bur
D: End cutting bur
Answer: D: End cutting bur 
Explanation: None