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
[{'content': 'A drug is shown to activate dopaminergic D1 and D2 and adrenergic α and β1 but not β2 receptors. Which of the following can be the drug being talked about? \nSelect and explain. \nA. Dopamine, B. Dobutamine, C. Methoxamine, D. Phenylephrine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]