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': 'In Cataract, spectacles are advised for the following a number of weeks after the operation – \nSelect and explain. \nA. 6 weeks, B. 10 weeks, C. 12 weeks, D. 14 weeks', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Refraction & prescription of glasses is done after 1-2 weeks in phacoemulsification and 6-8 weeks in extracapsular cataract extraction.', 'role': 'assistant'}]