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': 'Mechanism of action of curare is : \nSelect and explain. \nA. Reducing end plate potential, B. Reducing presynaptic potential, C. Inhibits k+ channels, D. Inhibits Na+ channels', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]