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
Fatal complication of sodium polystyrene sulfonate 
Select and explain. 
A. Cardiac arrest, B. Stroke, C. Respiratory depression, D. Intestinal necrosis
D: Intestinal necrosis
Answer: D: Intestinal necrosis 
Explanation: Intestinal necrosis, typically of colon or ileum is a rare but fatal complication of Sps.