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
Friction locked pins are usually retained by 
Select and explain. 
A. Threads on pin, B. Resiliency of dentine, C. Luting cement, D. Channel depth
B: Resiliency of dentine
Answer: B: Resiliency of dentine 
Explanation: None