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': 'All of the following statements about an alginate \nSelect and explain. \nA. It should be rapidly displaced from the mouth, B. It may exhibit fluid exudates on the surface as a result of imbibition of water, C. It will take up water and expand if kept wet, D. It will shrink as a result of syneresis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]