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': 'Normal anionic gap is seen in one of thefollowing- \nSelect and explain. \nA. Diarrhoea, B. Uremia, C. Lactic acidosis, D. Ketosis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Eg for normal anion gap : diarrhea, pancreatic fistula, antacid drugs, Renal tubular acidosis, Renal failure, Ref: Harrison&;s 19thE', 'role': 'assistant'}]