This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Which of the following is the effect of dobutamine?(irrelevant) 
Select and explain. 
A. Increase in hea rate, B. Increase in cardiac output, C. Increase in BP, D. Increase in plasma volume
D: Increase in plasma volume
Answer: D: Increase in plasma volume 
Explanation: Dobutamine is used to treat acute but potentially reversible hea failure, such as which occurs during cardiac surgery or in cases of septic or cardiogenic shock, on the basis of its positive inotropic action.Dobutamine can be used in cases of congestive hea failure to increase cardiac output. Refer kDT 6/e