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 is true about Agar hydrocolloid impression material? \nSelect and explain. \nA. Liquefies between 71 - 100°C, B. Solidfies between 50 - 70°C, C. Facilitates fabrication of metal dyes, D. Cannot register fine surface details', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]