This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pharmacology
[{'content': 'Which of the following drug is given orally? \nSelect and explain. \nA. Dalteparin, B. Rivaroxaban, C. Lepirudin, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Rivaroxaban &, Apixaban both are oral Factor Xa inhibitor, are used for sho-term thromboprophylaxis', 'role': 'assistant'}]