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': 'Most common late post-op complication of cataract Surgery is \nSelect and explain. \nA. Retinal detachment, B. Ballous keratopathy, C. Posterior capsular opacification, D. Cystoid Macular edema', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Most common late post-op complication of cataract Surgery is\xa0posterior capsular opacification.', 'role': 'assistant'}]