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 fast setting alginate: \nSelect and explain. \nA. 3-4.5 minutes, B. 1.5-3 minutes, C. 1-2 minutes, D. 2.5-3.5 minutes', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Setting time of Fast-setting alginate = 1.5 to 3 min\nSetting time of Normal-setting alginate = 3 to 4.5 min', 'role': 'assistant'}]