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': 'True about non-depolarizing muscle relaxants – a) Competitive inhibitor of acetylcholineb) Metabolised by pseudocholinesterasec) Mg2+ predisposes the blockd) Ca2+ antagonizes the blocke) Hypothermia prolongs the block \nSelect and explain. \nA. bce, B. acde, C. abcd, D. abde', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Non-depolarizing blockers act as competitive antagonists of Ach on Nm receptor at myoneural junction.\nMagnesium and hypothermia potentiate the block whereas calcium antagonizes the block.', 'role': 'assistant'}]