This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Immunomodulators, Subject name: Pharmacology
[{'content': 'Abatacept is a new drug approved for : \nSelect and explain. \nA. SLE, B. Rheumatoid ahritis, C. Sjogren syndrome, D. Scleroderma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Abatacept is the newer biological being used in refractory Rheumatoid Ahritis. The other newer biological agent used is Rituximab which is a monoclonal antibody that destroys B cells. It is a fusion protein composed of the Fc region of the immunoglobulin IgG1 fused to the extracellular domain of CTLA-4. ESSENTIALS OF MEDICAL PHARMACOLOGY; SEVENTH EDITION -K.D TRIPATHI Page:212', 'role': 'assistant'}]