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': 'Keratin specific to epidermal type differentiation are \nSelect and explain. \nA. K1, K2, K10, K12, B. K1, K3, K10, K12, C. K1, K2, K10, K13, D. K1, K2, K11, K13', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]