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': 'Avulsed tooth is not kept in water because \nSelect and explain. \nA. Water is a hypotonic solution causes rapid cell lysis, B. Water is a hypertonic solution causes rapid cell lysis, C. Water is a hypotonic solution causes shrinkage of cells, D. Water is a hypertonic solution causes shrinkage of cells', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]