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': 'The tin mercury phase formed during amalgamation is called: \nSelect and explain. \nA. Gamma phase, B. Gamma-1phase, C. Gamma-2phase, D. Lathe cut', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]