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
Technique that is best suited for preparing fine and curved canals 
Select and explain. 
A. step back, B. step down, C. crown down, D. Modified double flare technique
D: Modified double flare technique
Answer: D: Modified double flare technique 
Explanation: None