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
S file, False is 
Select and explain. 
A. Can also be called as Unifile, B. Has double helical design, C. Increased cutting efficiency than H file, D. Increased fracture resistance than H file
D: Increased fracture resistance than H file
Answer: D: Increased fracture resistance than H file 
Explanation: None