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
Mercury rich condition in a slow setting amalgam alloy system in a restoration results in 
Select and explain. 
A. Accelerated corrosion, B. Fracture of the restoration, C. Marginal damage, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None