This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neuromuscular Blocker, Subject name: Anaesthesia
Magnesium and neuromuscular - blockade: True statement 
Select and explain. 
A. Reduction neuromuscular - blockade when magnesium is administered to patients, B. Interaction probably more pronounced with magnesium and vecuronium, C. Accentuates blockades by nondepolorizing agents, not by depolarizing drugs, D. All of the above
B: Interaction probably more pronounced with magnesium and vecuronium
Answer: B: Interaction probably more pronounced with magnesium and vecuronium 
Explanation: Magnesium accentuates both depolarizing & non depolarizing Neuromuscular blocker. More so of non depolarizing neuromuscular blocker. Magnesium has a membrane stabilising effect at neuromuscular junction thus potentiation of effects of neuromuscular blocker.