This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Preoperative assessment and monitoring in anaesthesia, Subject name: Anaesthesia
[{'content': 'Cuff pressure in endotracheal intubation with prolonged ventilation should be less than \nSelect and explain. \nA. 20 mmHg, B. 30 mmHg, C. 40 mmHg, D. 50 mmHg', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cuff pressure in the endotracheal intubation is in between 25 to 30 mmHg.', 'role': 'assistant'}]