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
Alteplase differs from streptokinase as it : 
Select and explain. 
A. Is longer acting, B. Is derived from human kidney, C. Is cheap, D. Activates plasminogen bound to fibrin
D: Activates plasminogen bound to fibrin
Answer: D: Activates plasminogen bound to fibrin 
Explanation: None