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
Treatment of diabetic retinopathy 
Select and explain. 
A. Phacoemulsification, B. Retina laser photocoagulation, C. LASIK, D. None
B: Retina laser photocoagulation
Answer: B: Retina laser photocoagulation 
Explanation: B i.e. Retina laser photocoagulation