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': 'Which one of the following is the example of metabolic acidosis with respiratory alkalosis - \nSelect and explain. \nA. Salicylate overdose, B. Severe pulmonary oedema, C. Cardio-pulmonary arrest, D. Pregnancy with vomiting', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Salicylate over dose : Metabolic alkalosis + Respiratory alkalosis. Alcoholic : metabolic alkalosis + metabolic acidosis. Cardiopulmonary edema : metabolic acidosis + respiratory alkalosis Pregnancy : metabolic alkalosis + respiratory alkalosis Ref: Harrison&;s 19thE', 'role': 'assistant'}]