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': 'Acute metabolic acidosis \nSelect and explain. \nA. Has biphasic effect on K+ exceion, B. Does not effect K+ excretion significantly, C. Decreases urinary K+ exceion, D. Increases urinary K+ excretion', 'role': 'user'}, {'content': 'Answer: C \nExplanation: It is seen in low anion gap acidosis. Other features seen: low serum albumin (nephrotic syndrome.) High immunoglobulins (multiple myeloma) Increaed Li Increaed : K+, Ca2+, Mg2+ Ref: Harrison&;s 19thE', 'role': 'assistant'}]