This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pathology
[{'content': 'Last to recover in spinal anaesthesia \nSelect and explain. \nA. Pain, B. Motor, C. Proprioception, D. Preganglionic sympathetic', 'role': 'user'}, {'content': 'Answer: D \nExplanation: .It may be that preganglionic sympathetic fibers are more resistant to local anesthetic block than previously thought. Anesthesiologists often assume that, when a motor block is present during spinal or epidural anesthesia, sympathetic nerve transmission is blocked. Ref Robbins 9/e pg 346', 'role': 'assistant'}]