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: Anatomy
[{'content': 'Cervical Synringomyelia All are seen except \nSelect and explain. \nA. Burning sensation in hands, B. hyperophy of abductor pollicis brevis, C. Extensor plantar response is present, D. Absent biceps refex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Syringomyelia (sih-ring-go-my-E-lee-uh) is the development of a fluid-filled cyst (syrinx) within your spinal cord. Over time, the cyst may enlarge, damaging your spinal cord and causing pain, weakness and stiffness, among other symptoms. Refer Robbins page no Pg 9/e 1258', 'role': 'assistant'}]