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': 'During IOL implantation, corneal endothelial damage can be prevented by use of: \nSelect and explain. \nA. Methyl cellulose, B. Sodium hyaluronate, C. Chondroitin sulfate, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. All of the above', 'role': 'assistant'}]