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
In pin retained amalgam restoration, failure is more likely to occur at the 
Select and explain. 
A. Pin restoration interface, B. Pin dentin interface, C. Both of the above, D. Inside of restoration (Restoration fracture)
B: Pin dentin interface
Answer: B: Pin dentin interface 
Explanation: None