This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autacoids, Subject name: Pharmacology
Etanercept is a biological disease modifying agent used in the management of rheumatoid ahritis. its mechanism of action is 
Select and explain. 
A. TNF alpha blocked, B. COX2 inhibition, C. IL 6 inhibition, D. Stabilization of mast cells
A: TNF alpha blocked
Answer: A: TNF alpha blocked 
Explanation: TNF alpha blocking drugs are used in Rheumatoid ahritis and crohn's disease. these include adalimumab ceolizumab etanercept infliximab golimumab Refer kDT 6/e 883