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
The following treatment options are useful in the management of Guillain-Barre Syndrome except - 
Select and explain. 
A. Intra-venous immunoglobulin, B. Intra-venous methotrexate, C. Plasmapheresis, D. Physical medical rehabilitation
B: Intra-venous methotrexate
Answer: B: Intra-venous methotrexate 
Explanation: None