<prompt> D Tubocurarine acts byInhibiting nicotinic receptors at myoneural junctionInhibiting nicotinic receptors at autonomic ganglionProducing depolarising blockBy inhibiting re-uptake of acetyl choline  <response>: Refer Katzung 10e p 429 D-Tubocurarine is a skeletal muscle relaxant that acts by competitive inhibition of NM receptors at neuron muscular junction 