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': 'Etanercept used in rheumatoid ahritis act by the inhibition of: \nSelect and explain. \nA. TNF alpha, B. TFG beta, C. IL-2, D. IL-6', 'role': 'user'}, {'content': 'Answer: A \nExplanation: TNF Alpha blockers- Infliximab, adalimumab, ceolizumab, golimumab, etanercept Ref KD Tripathi 8th ed', 'role': 'assistant'}]