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: Pharmacology
[{'content': 'Botulinum toxin produces skeletal muscle paralysis by : \nSelect and explain. \nA. Enhancing release of norepinephrine, B. Inhibiting release of acetylcholine, C. Direct damage to nerve endings, D. Producing hemolysis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]