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
When porcelain is baked against metal, it should possess a 
Select and explain. 
A. high fusion expansion, B. high fusion temperature, C. linear coefficient of thermal expansion less than, but close to that of metal, D. linear coefficient of thermal expansion greater than, but close to that of the metal
C: linear coefficient of thermal expansion less than, but close to that of metal
Answer: C: linear coefficient of thermal expansion less than, but close to that of metal 
Explanation: None