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
First sign of raised intracranial pressure in fundoscopy is 
Select and explain. 
A. Cupping of optic disc, B. Dilatation of vessels, C. Blurring of disc, D. Nasal shifting of blood vessels
B: Dilatation of vessels
Answer: B: Dilatation of vessels 
Explanation: 1st sign - Dilatation of vessels.