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': 'All of the following diuretics inhibit Na+.K+.2Cl- symporter, EXCEPT: \nSelect and explain. \nA. Thiazide, B. Furosemide, C. Ethacrynic acid, D. Mersalyl', 'role': 'user'}, {'content': 'Answer: A \nExplanation: 1. High efficacy diuretics (Inhibitors of Na-K-2Cl cotransport)\n\nSulphamoyl derivatives - Furosemide, Bumetanide, Torsemide.\n\n2.Medium efficacy diuretics (Inhibitors of Na-Cl\xa0symport)\n\n(a) Benzothiadiazines (thiazides)- Hydrochlorothiazide, Benzthiazide,\xa0Hydroflumethiazide, Clopamide.\n(b) Thiazide-like (related heterocyclics) - Chlorthalidone, Metolazone, Xipamide,\xa0Indapamide.\n\n3. Weak or adjunctive diuretics\n\n(a) Carbonic anhydrase inhibitors - Acetazolamide.\n(b) Potassium-sparing diuretics.\n\n(i) Aldosterone antagonist: Spironolactone\xa0\n(ii) Inhibitors of the renal epithelial Na+ channel: Triamterene, Amiloride.\n\n(c) Osmotic diuretics - Mannitol, Isosorbide, Glycerol.', 'role': 'assistant'}]