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': 'Hysteresis in a hydrocolloid gel is \nSelect and explain. \nA. Moisture absorption, B. Temperature lag between gelation and liquefaction temperature, C. Phenomenon of conversion of gel into sol, D. All the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]