This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Adrenergic System, Subject name: Pharmacology
Half life of Dobutamine is: 
Select and explain. 
A. 120 seconds, B. 200 seconds, C. 20 seconds, D. 20 minutes
A: 120 seconds
Answer: A: 120 seconds 
Explanation: Ans. (A) 120 seconds(Ref: Lawrence 9/e p453)Dobutamine is an inotropic drug which has onset of action = 1-2 min.Peak action = 1-10 min.Duration of action = < 10 min.Half life = 2 min.