This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Fluid and electrolytes, Subject name: Medicine
[{'content': 'Following conditions can themselves cause metabolic acidosis except \nSelect and explain. \nA. Diarrhea, B. Diuretic, C. Ethylene, D. A', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Drugs that induce chloruresis, such as thiazides and loop diuretics (furosemide, bumetanide, torsemide, and ethacrynic acid), acutely diminish the ECFV without altering the total body bicarbonate content. The serum increases because the reduced ECFV "contracts" the in the plasma (contraction alkalosis). The chronic administration of diuretics tends to generate an alkalosis by increasing distal salt delivery, so that K+ and H+ secretion are stimulated', 'role': 'assistant'}]