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: Anaesthesia
[{'content': 'The following is true about endotracheal cuff. It has – \nSelect and explain. \nA. Low volume, high pressure, B. Low volume, low pressure, C. High volume, high pressure, D. Equal volume and pressure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]