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': 'Which of the following phases of dental amalgam has minimum strength \nSelect and explain. \nA. Gamma 1, B. Gamma 2, C. Epsilon 1, D. Gamma 3', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]