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: Medicine
[{'content': 'A normal-anion-gap metabolic acidosis occurs in patients with : \nSelect and explain. \nA. Diarrhoea, B. Diabetic ketoacidosis, C. Methyl alcohol poisoning, D. Acute renal failure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer is A (Diarrhea): The differential diagnosis of normal anion gap acidosis : Hyperalimentation Acetazolamide and other carbonic anhydrase inhibitors Renal tubular acidosis Diarrhea: due to a loss of bicarbonate. Ureteroenteric fistula Pancreaticoduodenal fistula Spironolactone', 'role': 'assistant'}]