This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuro-ophthalmology, Subject name: Ophthalmology
Consecutive optic atrophy is seen in - 
Select and explain. 
A. Papilloedema, B. Papilltis, C. Retinal detachment, D. Retinitis-pigmentosa
D: Retinitis-pigmentosa
Answer: D: Retinitis-pigmentosa 
Explanation: Common causes are : diffuse chorioretinitis, rp, pathological myopia, CRAO. Ref :AK Khurana 6thE pg 327