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
[{'content': 'Which of the following is beneficial for patient suffering from gyrate atrophy of choroid due to deficiency of enzyme Ornithine trans carbomylase \nSelect and explain. \nA. Ornithine free diet, B. Arginine free diet, C. Folic acid & pyridoxine, D. Angiod Streaks', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Arginine free diet Gyrate atrophy of choroid due to deficiency of ornithine amino transferase (OAT) enzyme is treated by arginine free diet (treatment of choice) and vitamin B6 (pyridoxine) supplementationQ.', 'role': 'assistant'}]