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 statements about high copper silver alloy compared to conventional alloy is not true? 
Select and explain. 
A. It has increased tensile and compressive strength, B. It has poor tarnish and corrosion resistance, C. Its' edge strength is greater, D. Mercury content in the final restoration is less
B: It has poor tarnish and corrosion resistance
Answer: B: It has poor tarnish and corrosion resistance 
Explanation: None