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': 'Nerve Conduction is slowest in \nSelect and explain. \nA. C fibers, B. A alpha, C. A beta, D. A delta', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) C fibers(Ref: Ganong, 25th ed/p.94)A a - highest conduction velocity (70 - 120 m/s)C fibers - slowest conduction velocity (0.5 - m/s)', 'role': 'assistant'}]