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
[{'content': 'The non depolarizing neuromuscular blocker has a normal activity with all the following except: \nSelect and explain. \nA. Myotonia, B. Muscular dystrophy, C. Upper motor neuron lesions, D. Myasthenia gravis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: In myasthenia gravis circulating antibodies produce a functional reduction in the number of postsynaptic acetylcholine receptors. The myasthenia patients are usually resistant to Succinylcholine. Sensitively to non depolarizing NMB is increased to a variable extent. In Myasthenia patient nondepolarizing neuromuscular is given is less dose.', 'role': 'assistant'}]