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
True about endotracheal cuff – a) Low-volume, high pressureb) Low–volume, low pressurec) High-volume, low pressured) High-volume, high pressuree) Equal-volume, pressure 
Select and explain. 
A. a, B. ac, C. ad, D. b
B: ac
Answer: B: ac 
Explanation: Cuffed endotracheal tubes may have either low pressure, high volume cuff or high pressure low volume cuff.