This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Symmetrical areflexic bladder bowel & lower limb occur in \nSelect and explain. \nA. Cauda equina syndrome, B. Conus medullaris syndrome, C. Nerve root damage, D. Brown sequerd syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: B i.e. Conus medullaris syndrome', 'role': 'assistant'}]