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': 'The type of fibrous element in enamel is : \nSelect and explain. \nA. Tono filament, B. Keratin like fibre, C. Collagen fibre, D. Vimentin filament', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]