This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Pharmacology
[{'content': 'True about acetazolamide \nSelect and explain. \nA. Increase sodium reabsorption and potassium secretion, B. Carbonic anhydrase inhibitor, C. Acts at ascending limb of loop of Henle, D. Increase aqueous outflow mainly', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ref: Katzung's, 11th ed. pg. 416* Acetazolamide is a carbonic anhydrase inhibitor which acts on the proximal tubule of nephron.* In kidney, it inhibits H+ secretion and HCO3 reabsorption, which inturn reduces sodium reabsorption.* In eye, it reduces the aqueous formation by limiting generation of bicarbonate ion in ciliary epithelium.", 'role': 'assistant'}]