This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, 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: 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: Direct thrombin inhibitor- Dabigatran Direct factor Xa inhibitors Apixaban Rivaroxaban Edoxaban Betrixaban', 'role': 'assistant'}]