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': 'Agonistic action at which of the following adrenergic receptors results in the reduction of aqueous secretion ? \nSelect and explain. \nA. β1 receptor, B. β2 receptor, C. M2 receptor, D. α2 receptor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: α2 receptors on ciliary epithelium when stimulated, reduces aqueous humor secretion.', 'role': 'assistant'}]