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
Which of the following drugs is not recommended for the treatment of Multiple Sclerosis: 
Select and explain. 
A. Interferon p-1 a, B. Interferon p-lb, C. Glatiramer Acetate, D. Mycophenolate
B: Interferon p-lb
Answer: B: Interferon p-lb 
Explanation: Answer is B (Medial Medullary Syndrome): Horner's syndrome is associated with Lateral Medullary Syndrome or Wallenberg Syndrome and not with Medial Medullary Syndrome.