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': 'All of the following are true about Heparin except \nSelect and explain. \nA. Argatroban is the drug of choice for Heparin induced thrombocytopenia, B. Unfractionized Heparin induce antibodies against PF - 4 and lead to platelet aggregation, C. Heparin can lead to arterial thrombosis more than venous thrombosis, D. Unfractionized Heparin is safer in renal failure', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Heparin causes venous thrombosis more commonly than arterial thrombosis.', 'role': 'assistant'}]