This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Gall Bladder & Bile Ducts, Subject name: Surgery
[{'content': 'Laparoscopy - pressure in the abdomen of children - \nSelect and explain. \nA. 2-6 mm Hg, B. 8-12 mm Hg, C. 14 - 18 mm Hg, D. 20 - 24 mm Hg', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., 8-12 mm Hg * The optimal intrabdominal pressure for laproscopy in children has been established to be between 8-12 mm Hg, with neonates tolerating lower pressures than elders.", 'role': 'assistant'}]