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': 'All of the following are true about Arnold Chiari Malformation Type I except: \nSelect and explain. \nA. Displacement of cerebellar tonsils (>5mm) into cervical canal, B. Neck pain and spasticity present, C. Syringomyelia can be present, D. Associated with hydrocephalus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Hydrocephalus is seen with Type II\xa0Chiari Malformation, not Type I.', 'role': 'assistant'}]