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': 'Train of four is characteristically used in concern with – \nSelect and explain. \nA. Malignant hyperthermia, B. Non–depolarizing neuromuscular blockers, C. Mechanical ventilation, D. To check hemodynamic parameters', 'role': 'user'}, {'content': 'Answer: B \nExplanation: TO4 is used for monitoring of neuro-muscular block during anaesthesia.', 'role': 'assistant'}]