This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
[{'content': 'Drug of choice for relapsing remitting multiple sclerosis is: \nSelect and explain. \nA. Alpha IEN, B. Beta IFN, C. Gamma IFN, D. Natalizumab', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Answer is option 2,beta interferon Early treatment with high-dose interferon beta-1a reverses cognitive and coical plasticity deficits in multiple sclerosis. Mori F1, Kusayanagi H, Buttari F, Centini B, Monteleone F, Nicoletti CG, Bernardi G, Di Cantogno EV, Marciani MG, Centonze D. Author information Abstract Acute inflammation is associated with cognitive deficits and alterations of coical plasticity in multiple sclerosis (MS). We tested whether early treatment with high-dose interferon (IFN) beta-1a, known to reduce inflammatory activity, improves coical function and cognitive deficits in MS.', 'role': 'assistant'}]