This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'Factors effecting nerve conduction are \nSelect and explain. \nA. Pressure, B. Hypoxia, C. Local anaesthetics, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pressure, hypoxia, local anaesthetics are factors effecting nerve conduction Ref:Guyton and Hall textbook of medical physiology 12th edition,page number: 72,73', 'role': 'assistant'}]