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: Unknown
[{'content': 'Which of the following Vitamins is being used in Optic Neuritis? \nSelect and explain. \nA. Vitamin A, B. Vitamin B, C. Vitamin D, D. Vitamin C', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e.,Vitamin C o Intravenous administration of vitamin C can be evaluated as the method of choice for the treatment of patients with ON.", 'role': 'assistant'}]