This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy of skin, Subject name: Dental
[{'content': 'The distribution of keratins in the cornea is \nSelect and explain. \nA. K3/K12, B. K2/K11, C. K5/K14, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ref:- Review of Dermatology by Alikhan; pg num:- 8', 'role': 'assistant'}]