This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Retina, Subject name: Ophthalmology
Blind spot enlargement indicates: 
Select and explain. 
A. Retinal detachment, B. Avulsion of optic nerve, C. Papilloedema, D. Papillitis
C: Papilloedema
Answer: C: Papilloedema 
Explanation: c papilloedema refkhurana 3rd/e p. 286