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
Angiography is the investigation of choice in: 
Select and explain. 
A. Posterior vitreous detachment, B. Rhegmatogenous retinal detachment, C. Retinoschisis, D. Central serous retinopathy
D: Central serous retinopathy
Answer: D: Central serous retinopathy 
Explanation: Ans. Central serous retinopathy