This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pharmacology
[{'content': 'Parenteral direct thrombin inhibitor? \nSelect and explain. \nA. Ximelagatran, B. Dabigatran, C. Argatroban, D. Heparin', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Argatroban", 'role': 'assistant'}]