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: Pediatrics
[{'content': "Combination of retinitis pigmentosa and ichthyosis is seen in – \nSelect and explain. \nA. Netherton syndrome, B. Refsum's syndrome, C. Down's syndrome, D. Mob's syndrome", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Refsum disease is characterized by ataxia, ichthyosis, cardiomyopathy, retinitis pigmentosa and absent tendon reflexes.', 'role': 'assistant'}]