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: Pediatrics
[{'content': 'Which of the following is a characteristic radiological finding in neonatal necrotizing enterocolitis – \nSelect and explain. \nA. Gas in the portal system, B. Gas in the intestinal wall, C. Pneumoperitonium, D. Air fluid levels', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]