This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anticoagulants and Coagulants, Subject name: Pharmacology
[{'content': 'Apixaban is a new drug that acts by: \nSelect and explain. \nA. Inhibiting TNF alpha, B. Inhibiting coagulation factor Xa, C. Inhibiting platelet aggregation, D. Activating plasminogen', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (B) Inhibiting coagulation factor Xa:(Ref: Harrison 18/e p1000, KDT 8/e p671)Rivaroxaban and Apixaban are newer oral anticoagulants that act by inhibiting factor Xa.Newer oral anticoagulants that are currently being asked in the exams are:Dabigatran (Direct thrombin inhibitor)RivaroxabanApixaban', 'role': 'assistant'}]