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': 'A 5-year old child is recommended the following fluoride dentifrice regimen \nSelect and explain. \nA. Fluoride tooth paste not recommended, B. Brushing 3 times with fluoride tooth paste, C. Once with fluoride paste and two times with normal paste., D. Brushing twice with fluoride tooth paste and once with normal paste', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]