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
Drug not used in multiple sclerosis- 
Select and explain. 
A. Interferon-β-la, B. Interferon-β-lb, C. Glatiramer acetate, D. Mycophenolate
D: Mycophenolate
Answer: D: Mycophenolate 
Explanation: None