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: Surgery
After ureterosigmoidostomy which electrolyte abnormality may occur 
Select and explain. 
A. Hyperkalemic alkalosis, B. Metabolic alkalosis, C. Metabolic acidosis, D. Hypokalemic acidosis
C: Metabolic acidosis
Answer: C: Metabolic acidosis 
Explanation: None