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: Medicine
[{'content': 'Drug not used in multiple sclerosis- \nSelect and explain. \nA. Interferon-β-la, B. Interferon-β-lb, C. Glatiramer acetate, D. Mycophenolate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]