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
Burnishing of dental amalgam restoration does NOT 
Select and explain. 
A. reduce surface microporosity, B. reduce creep, C. improve the marginal seal, D. reduce polishing time
D: reduce polishing time
Answer: D: reduce polishing time 
Explanation: None