This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Lens, Subject name: Ophthalmology
[{'content': 'Best way to prevent infection after cataract surgery is- \nSelect and explain. \nA. Antibiotics, B. Eyebrows shaving, C. Through irrigation, D. None of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 4 times for 14 days comprehensive ophthalmology. REF:khurana,pg no 210', 'role': 'assistant'}]