This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anticoagulants and Coagulants, Subject name: Pharmacology
[{'content': 'Use of anticoagulant is - \nSelect and explain. \nA. Venous thrombosis, B. Arterial thrombosis, C. Vitamin K toxicity, D. Heart failure', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Venous thrombosis Prophylaxis for venous thrombuso Heparin (unfractioned, LMW, or fondaparinox) and oral anticoagulants (warfarin).Prophylaxis for arterial thrombuso Aspirino Clopidogrelo Ticlopidine", 'role': 'assistant'}]