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': 'Maximum amount of flouride is absorbed by: \nSelect and explain. \nA. Enamel, B. Dentin, C. Cementum, D. Pulp', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Enamel 2200 – 3300 ppm\nDentin 200 – 300 ppm\nCementum 4400 ppm\nPulp is 100 – 650 ppm', 'role': 'assistant'}]