This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Autonomic nervous system, Subject name: Pharmacology
[{'content': 'Which is True about dobutamine? \nSelect and explain. \nA. Dobutamine decreases peripheral resistance, B. Acts on D1 and D2 receptors, C. Decrease kidney circulation, D. Has no effect on coronary circulation', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref: HL Sharma 3rd ed pg no: 177 Dobutamine is a derivative of dopamine and is a selective beta1 agonist. It causes an increase in the force of contraction without a significant increase in hea rate. It also produces some vasodilatation by stimulating the beta 2 receptors. It doesn't decrease kidney circulation.", 'role': 'assistant'}]