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': 'True about N2O cylinder – a)  Pressure is 2200 PSI b) Blue in colourc) Gas in liquid formd) Pin index 3.5e) It is flammable \nSelect and explain. \nA. abc, B. bcd, C. ac, D. bd', 'role': 'user'}, {'content': 'Answer: B \nExplanation: N2O cylinder has following features :-\n\n\nFilled in liquid form\nColour is blue\nCapacity → E cylinder → 1590 lit, H cylinder → 15800 lit\nPressure is 760 psi\nPin index is 3.5', 'role': 'assistant'}]