This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demyelinating disorder, Subject name: Medicine
[{'content': 'Which of the following is used in acute exacerbation of multiple sclerosis? \nSelect and explain. \nA. Methylprednisolone, B. Fingolimod, C. Beta interferon, D. Natalizumab', 'role': 'user'}, {'content': 'Answer: A \nExplanation: For acute attack of M.S = IV methyl prednisolone Glucocoicoids are used to manage first attacks or acute exacerbations of multiple sclerosis, usually present as optic neuritis.', 'role': 'assistant'}]