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
[{'content': 'D-tubocurarine acts by \nSelect and explain. \nA. Inhibiting nicotinic receptors at myoneural junction, B. Inhibiting nicotinic receptors at autonomic ganglion, C. Producing depolarizing block, D. By inhibiting reuptake of acetylcholine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All non-depolarising blockers (D-Tubocurare) acts as a competitive antagonist of acetylcholine on nicotine (Nm) receptors at myoneural junction .', 'role': 'assistant'}]