This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Ophthalmology
[{'content': 'Which of the following is/are the side effect/s of using argon laser - \nSelect and explain. \nA. Hypopigmentation, B. Crusting, C. Keloid formation, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: argon gases causes all d side effects. REF:khurana,pg no 461', 'role': 'assistant'}]