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: Medicine
[{'content': "All are true about Huntington's disease except - \nSelect and explain. \nA. Chorea, B. Behavioral disturbance, C. Early onset of memory loss, D. Cog- wheel rigidity.", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]