This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T., Subject name: Pathology
[{'content': 'Pneumatosis intestinalis is diagnostic of: \nSelect and explain. \nA. Ileal perforation, B. Necrotizing enterocolitis, C. Meconium ileus, D. Colonic aganglionosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Necrotizing enterocolitis(Ref: Scand J Surg 94 (1): 47-50. PMID 15865117)In newborns, pneumatosis intestinalis is considered diagnostic for necrotizing enterocolitis, and the air is produced by bacteria in the bowel wall.', 'role': 'assistant'}]