This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Muscle relaxants, Subject name: Anaesthesia
Train of four is characteristically used in concern with- 
Select and explain. 
A. Malignant hypehermia, B. Non -depolarizing neuromuscular blockers, C. Mechanical ventilation, D. To check hemodynamic parameters
B: Non -depolarizing neuromuscular blockers
Answer: B: Non -depolarizing neuromuscular blockers 
Explanation: Train of four is used for monitoring neuromuscular block during anaesthesia. Fade on TO4 is the characteristic feature of non-depolarising neuromuscular blockage.