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': 'Metabolic acidosis is associated with all of the following\nexcept: \nSelect and explain. \nA. Chronic renal failure, B. Prolonged vomiting, C. Starvation, D. Uncontrolled DM', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]