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': 'To store avulsed tooth, which kind of milk is shown to be suitable? \nSelect and explain. \nA. Hot milk, B. Cold milk, C. Low fat milk, D. High fat milk', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Milk has shown to maintain the vitality of periodontal ligament cells for 3 hours.\xa0\nLow fat milk is relatively bacteria-free with pH and osmolality compatible with vital cells.\nRef: Textbook of endodontics, Nisha Garg and Amit Garg, 3rd edition, pg no:476', 'role': 'assistant'}]