This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Inborn Errors of Metabolism, Subject name: Pediatrics
Metabolic disease in which intestinal obstruction is seen? 
Select and explain. 
A. Hereditary fructose intolerance, B. Phenylketonuria, C. Hurler disease, D. Cystic fibrosis
D: Cystic fibrosis
Answer: D: Cystic fibrosis 
Explanation: d. Cystic fibrosis(Ref: Nelson 20/e p 2098)In cystic fibrosis, neonates may present with meconium ileus, meconium plug & meconium peritonitis, while infants may present with distal intestinal obstruction syndrome.