This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Parasympathetic System & Glaucoma, Subject name: Pharmacology
[{'content': 'Black widow spider toxin is known to cause \nSelect and explain. \nA. Excess release of Acetylcholine, B. Decrease release of Acetylcholine, C. Inhibits synthesis of Acetylcholine, D. Blocking Active transpo of ACh into synaptic vesicle', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Excess release of Acetylcholine Black widow spider toxin Induces massive release and depletion of acetylcholine Decrease release of Acetylcholine Botulinum toxin Inhibits synthesis of Acetylcholine Hemicholinium (HC3) blocks choline uptake (the rate limiting step in Achsynthesis) and depletes Ach Active transpo of ACh into synaptic vesicle Inhibited by vesamicol', 'role': 'assistant'}]