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': "Which of the following causes metabolic acidoosis? \nSelect and explain. \nA. Mineralocoicoid deficiency, B. Bater's syndrome, C. Thiazide diuretic therapy, D. Recurrent vomiting", 'role': 'user'}, {'content': "Answer: A \nExplanation: Bater's syndrome, thiazide diuretic therapy and recurrent vomiting results in metabolic alkalois. Mineralocoicoid deficiency results in metabolic acidosis. Ref: Harrisons principles of internal medicine, 18th edition, Page: 369.", 'role': 'assistant'}]