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
Which of the following is/are the side effect/s of using argon laser - 
Select and explain. 
A. Hypopigmentation, B. Crusting, C. Keloid formation, D. All the above
D: All the above
Answer: D: All the above 
Explanation: argon gases causes all d side effects. REF:khurana,pg no 461