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
Which of the following are characteristic feature of high copper amalgam alloy? 
Select and explain. 
A. Low compressive strength, B. High marginal breakdown, C. Less marginal #, D. High creep
C: Less marginal #
Answer: C: Less marginal # 
Explanation: None