This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Agonistic action at which of the following adrenergic receptor result in the reduction of excess secretion \nSelect and explain. \nA. Beta 1 receptor, B. Beta 2 receptor, C. M2 receptor, D. Alpha 2 receptor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref-KDT 6/e p146 Stimulation of Alpha 2 receptors located on ciliary epithelium reduces secretion of aqueous humor.', 'role': 'assistant'}]