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': 'All are features of neonatal necrotizing enterocolitis except - \nSelect and explain. \nA. Abdominal distension, B. Increased bowel sound, C. Metabolic acidosis, D. Pneumoperitoneum', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Increased bowel sound o Bowel sounds are diminished or absent.", 'role': 'assistant'}]