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': 'The fibre which is the thickest in human nerve is \nSelect and explain. \nA. Touch, B. Pain, C. Temperature, D. Proprioception', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Proprioception is carried by the thickest fibre A alpha (12-20 micrometer). Touch by A beta (5-12 um)Pain, temperature by A delta (2-5 um). Ref: Ganong&;s Review of medical physiology;25th edition; pg: 94; table 4-1.', 'role': 'assistant'}]