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': 'Which of the following statements about Anaesthetic Machine is true – \nSelect and explain. \nA. Temperature of Desflurane Vaporizer Chamber is 39°C, B. Flow-meters (Rotameters) are Interchangeable, C. Oxygen sensors are placed on the expiratory limb of the anesthesia circuit, D. All of the above', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Temperature of Desflurane Vaporizer Chamber is 39°C (Unique Features of Desflurane Vaporizers).\nFlow-meters (Rotameters) are not interchangeable.\nOxygen sensors are placed on the Inspiratory limb of Anesthesia Circuit.', 'role': 'assistant'}]