This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
Drug used in multiple sclerosis 
Select and explain. 
A. Inferferon alpha, B. Interferon beta, C. Interferon gamma, D. Infliximab -
B: Interferon beta
Answer: B: Interferon beta 
Explanation: *beta interferon have a modest effect on exacerbrations and disease progression in relapsing-remitting MS. Ref Harrison20th edition pg 2456