This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET 2018, Subject name: Pharmacology
[{'content': 'Mechanism of action of d-tubocurarine is:- \nSelect and explain. \nA. Competitive, nondepolarizing block at the Nm cholinergic receptor, B. Non-competitive, nondepolarizing block at the Nm cholinergic receptor, C. Competitive, depolarizing block at the Nm cholinergic receptor, D. Noncompetitive, depolarizing block at the Nm cholinergic receptor', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Neuro Muscular blockers Depolarising or Non-competitive Non-depolarising or competitive Succinylcholine Dexamethonium Curium Curonium Atracurium Cisatracurium Mivacurium Pancuronium Pipecuronium Vecuronium Rocuronium Rapacuronium', 'role': 'assistant'}]