This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2019, Subject name: Medicine
[{'content': 'Oral factor Xa inhibitor is:- \nSelect and explain. \nA. Dabigatran etexilate, B. Rivaroxaban, C. Fondaparinux, D. Bivalirudin', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Option A: DABIGATRAM- THROMBIN inhibitor Option B: RIVAROXABAN- Xa inhibitor Option C: FONDAPARINUX: Ultra LMWH Option D :BIVALIRUDIN is a direct thrombin inhibitor', 'role': 'assistant'}]