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': 'Oral Factor Xa Inhibitor is \nSelect and explain. \nA. Dabigatran etexilate, B. Fondaparinux, C. Bivalirudin, D. Rivaroxaban', 'role': 'user'}, {'content': "Answer: D \nExplanation: Factor Xa inhibitors * Oral Direct Factor Xa (Stua-Prower factor) Inhibitors are Rivaroxaban, Apixaban, Betrixaban and Edoxaban * Rivaroxaban inhibits free and clot associated Factor Xa AE reducing !rombin generation AE suppressing Platelet aggregation and Fibrin formation. * Other options: * Dabigatran etexilate is an Oral Direct Factor IIa (Thrombin) Inhibitor * Fondaparinux is a parenteral synthetic Heparin derivative anticoagulant * Bivalirudin is a parenteral Hirudin-based Thrombin Inhibitor. * Salient features of Rivaroxaban: Ref:- Goodman & Gilman's the pharmacological basis of therapeutics 13th Edition; Pg num:- 594.", 'role': 'assistant'}]