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
Annular Ring scotoma is seen in: 
Select and explain. 
A. Retinitis pigmentosa, B. Night blindness, C. Severe myopia, D. Angle closure glaucoma
A: Retinitis pigmentosa
Answer: A: Retinitis pigmentosa 
Explanation: Retinitis pigmentosa