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: Surgery
Ophthalmic findings in vitamin B12 deficiency are 
Select and explain. 
A. Bitemporal hemianopia, B. Binasal hemianopia, C. Heteronymous hemianopia, D. Centrocecal scotoma
D: Centrocecal scotoma
Answer: D: Centrocecal scotoma 
Explanation: * Vitamin B12 deficiency causes optic neuropathy and impaired acuity and central scotoma * Annular or ring shaped scotoma is a typical features of Retinitis pigmentosa