This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Body composition and Acid base Balance, Subject name: Pediatrics
[{'content': 'A Normal anion gap metabolic acidosis occurs in patients with? \nSelect and explain. \nA. Diabetic ketoacidosis, B. Methyl alcohol poisoning, C. Diarrhea, D. Acute kidney injury', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Diarrhea and Renal tubular acidosis (A) are two impoant causes of normal anion gap metabolic acidosis.', 'role': 'assistant'}]