This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Medicine
All of the following cause high anion gap metabolic acidosis except 
Select and explain. 
A. Lactic acidosis, B. Salicylate poisoning, C. Ethylyene glycol poisoning, D. Ureterosigmoidostomy
D: Ureterosigmoidostomy
Answer: D: Ureterosigmoidostomy 
Explanation: Ureterosigmoidostomy causes non AG gap acidosisLactic acidosis and ethylene glycol poisoning lead to high AG acidosisSalicylate poisoning usually causes respiratory alkalosisRef: Harrison's 18/e p368, 369