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': 'Surest indicator of reversal of anaesthesia is \nSelect and explain. \nA. Head lift for 5 seconds, B. Hand grip for 5 seconds, C. TOF > 0.9, D. Tongue depression', 'role': 'user'}, {'content': 'Answer: A \nExplanation: After reversal * good muscle tone - as assessed clinically .being able to cough, raise his or her head from the pillow for at least 5 s, protrude the tongue and have good grip strength', 'role': 'assistant'}]