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 dystrophies are : \nSelect and explain. \nA. Macular, B. Granular, C. Lattice, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A. i.e. Macular; B. i.e. Granular; C. i.e. Lattice', 'role': 'assistant'}]