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: Physiology
[{'content': 'In metabolic acidosis, which of the following changes are seen : \nSelect and explain. \nA. Increased K+ excretion, B. Decreased Potassium excretion, C. Increased Na+ excretion, D. Increased Na+ reabsorption', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Decreased Potassium excretion', 'role': 'assistant'}]