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
Retinitis Pigmentosa is associated with all except – 
Select and explain. 
A. Usher Syndrome, B. Marfan's Syndrome, C. Kearns – Sayre Syndrome, D. Bassen – Kornzweig Syndrome
B: Marfan's Syndrome
Answer: B: Marfan's Syndrome 
Explanation: Systemic syndrome associated with Retinitis Pigmentosa are Usher's syndrome, Hallgren's syndrome, Cockayne's syndrome, Refsum's syndrome, Laurence- Moon- Biedl syndrome, Bussen - Kornzweig (Abetalipoproteinemia) syndrome, Kearns - sayer syndrome, Friedreish's ataxia, Bardet - Biedle syndrome, NARP (Neuropathy, ataxia, retinitis pigmentosa), developmental delay, mental retardation, lactic acidemia), Neuronal ceroid lipofitscinosis, olivopontocerebellar degeneration.