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: Medicine
The regional arterial resistance of the mesentery and kidney vessels is reduced by - 
Select and explain. 
A. Dopamine, B. Dobutamine, C. Nor adrenaline, D. Isoprenaline
A: Dopamine
Answer: A: Dopamine 
Explanation: None