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
An advantage of using a gold restoration rather than an amalgam restoration is: 
Select and explain. 
A. The ease of tooth preparation, B. Better adaptation to the walls of the preparation, C. The greater edge strength of cast gold, D. It is less expensive
C: The greater edge strength of cast gold
Answer: C: The greater edge strength of cast gold 
Explanation: None