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': 'To avoid amblyopia, a congenital cataract should be ideally operated within the age of – \nSelect and explain. \nA. 6 weeks, B. 6 months, C. 12 months, D. 24 months', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The patient in question is a case of unilateral dense cataract and hence should be operated as early as possible.\nFrom the options provided surgery at four weeks is the earliest and hence the best answer.', 'role': 'assistant'}]