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': "Chloride responsive alkalosis, causes are- \nSelect and explain. \nA. Severe vomiting, B. Bater's syndrome, C. Milk alkali syndrome, D. Frusemide therapy", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Repeat', 'role': 'assistant'}]