This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vitreous and retina, Subject name: Ophthalmology
In central serous retinopathy - 
Select and explain. 
A. Often shows focal leakage on fluorescein fundus photography, B. A macular hole is a common end result, C. The image perceived by the patient on the affected side in unilateral cases is bigger than on the normal side, D. A dense central scotoma is the most common presentation
A: Often shows focal leakage on fluorescein fundus photography
Answer: A: Often shows focal leakage on fluorescein fundus photography 
Explanation: Fundus fluorescein angiography helps in confirming the diagnosis. Two patterns are seen: Ink-blot pattern. It consists of small hyperfluorescent spot which gradually increases in size Smoke-stack pattern. It consists of a small hyperfluorescent spot which ascends veically like a smoke-stack and gradually spreads laterally to take a mushroom or umbrella configuration Ref: AK Khurana 6thE pg293