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
Difference between class II amalgam and cast restoration is 
Select and explain. 
A. Bevels, B. Occlusal resistance form, C. Outline form, D. Proximal retention
A: Bevels
Answer: A: Bevels 
Explanation: None