The following are multiple choice questions (with answers) about medical knowledge.   **Question:** Etanercept is a disease-modifying drug used in management of rheumatoid ahritis. What is its mechanism of action?   (A) Inhibition of TNF alpha   (B) COX-2 inhibition   (C) IL-6 inhibition   (D) Stabilization of mast cells
['(A) Inhibition of TNF alpha <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Inhibition of TNF alpha \n (B) COX-2 inhibition \n (C) IL-6 inhibition \n (D) Stabilization of mast cells <> possible answers', '  Etanercept is a disease-modifying drug used in management of rheumatoid ahritis. What is its mechanism of action? <> context@']