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': "Causes of metabolic alkalosis include all the following except : \nSelect and explain. \nA. Mineralocoicoid deficiency Recurrent vomiting, B. Bater's syndrome, C. Thiazide diuretic therapy, D. Recurrent vomiting", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is A Mineralocoicoid deficiency', 'role': 'assistant'}]