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': 'Setting time of Amalgam is best controlled by? \nSelect and explain. \nA. Using spherical particles, B. Lathe cut alloy, C. Altering Hg-Alloy ratio, D. Trituration time', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]