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': 'Group A nerve fibers are most susceptible to \nSelect and explain. \nA. Pressure, B. Hypoxia, C. Local anaesthetics, D. Temperature', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pressure on a nerve can cause loss of conduction in large diameter motor,touch& pressure fibre ( ie group A fibre) ,while pain sensation (group c fibre) remains relatively intact. Ref: Ganong&;s Review of medical physiology;25th edition; pg: 95.', 'role': 'assistant'}]