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
[{'content': 'Best property of high copper amalgam as compare to low copper \nSelect and explain. \nA. more corrosion, B. high marginal strength, C. better tensile strength, D. less liquid require for mix', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]