This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hematology, Subject name: Pharmacology
[{'content': 'A useful thrombolytic agent that leads to plasmin activation is: \nSelect and explain. \nA. Vitamin K, B. Heparin, C. Streptokinase, D. Aspirin', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Among the given options only streptokinase is a fibrinolytic agent. Heparin is an anti coagulant and aspirin is an anti platelet drug. From medical pharmacology padmaja 4th edition Page no 341', 'role': 'assistant'}]