This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunomodulator, Subject name: Pharmacology
Monoclonal antibody used for Rheumatoid arthritis: 
Select and explain. 
A. Anakinra, B. Leflunomide, C. Adalimumab, D. Sulfasalazine
A: Anakinra
Answer: A: Anakinra 
Explanation: Ans. A. AnakinraAnakinra is IL-1 antagonist, leflunomide inhibit the growth of B cells. Adalimumab is monoclonal antibody which inhibit the TNF alpha. Sulfasalazine is DMARD.