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': 'Fatal complication of sodium polystyrene sulfonate \nSelect and explain. \nA. Cardiac arrest, B. Stroke, C. Respiratory depression, D. Intestinal necrosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Intestinal necrosis, typically of colon or ileum is a rare but fatal complication of Sps.', 'role': 'assistant'}]