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 Vitamins is being used in Optic Neuritis ? \nSelect and explain. \nA. Vitamin A, B. Pyridoxine, C. Vitamin D, D. Vitamin C', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Answer- D. Vitamin CIntravenous administration of vitamin C can be evaluated as the method of choice for the treatment of patients with ON.', 'role': 'assistant'}]