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
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? 
Select and explain. 
A. Dopamine, B. Dobutamine, C. Methoxamine, D. Phenylephrine
A: Dopamine
Answer: A: Dopamine 
Explanation: None