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': 'All of the following cause high anion gap metabolic acidosis EXCEPT: March 2013 (d, f) \nSelect and explain. \nA. Lactic acidosis, B. Salicylates poisoning, C. Ethylene glycol poisoning, D. Ureterosigmoidostomy', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D i.e. Ureterosigmoidostomy Anion gap Increased anion gap is seen in: - Starvation, - Salicylate poisoning, - Renal failure etc.', 'role': 'assistant'}]