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': 'A 9 year old girl was admited for dialysis. On laboratory examination her potassium levels were 7.8 mEq/L. Which of the following would quickly lower her increased potassium levels - \nSelect and explain. \nA. IV calcium gluconate, B. IV Glucose and insulin, C. Oral kayexalate in sorbitol, D. IV NaHCO3', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]