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: Ophthalmology
[{'content': 'Corneal transparency is maintained by all except: \nSelect and explain. \nA. Relative dehydration, B. Increased mitotic figures in centre of cornea, C. Unmyelinated nerve fibers, D. Uniform spacing of collagen fibrils', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. Increased mitotic figures in centre of cornea', 'role': 'assistant'}]