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': 'Which one of the following preferentially activates plasminogen bound to fibrin and avoids the systemic lytic state : \nSelect and explain. \nA. Streptokinase, B. Aminocaproic acid, C. Tranexamic acid, D. Alteplase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]