This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
[{'content': 'All the following statements are true regarding Parkinsonism disease developing in people > 70 years of age, except \nSelect and explain. \nA. The long-term side effects of levodopa such as dyskinesia are less, B. They are more likely to develop autonomic disturbances, C. Cognitive changes and dementia are more common, D. Prognosis is worse', 'role': 'user'}, {'content': "Answer: D \nExplanation: Parkinsonism is a clinical syndrome characterized by tremor, bradykinesia, rigidity, and postural instability. It is found in Parkinson's disease (PD), after which it is named, dementia with Lewy bodies (DLB), Parkinson's disease dementia (PDD), and many other conditions Prognosis is good on medication Ref Harrison20th edition pg 2567", 'role': 'assistant'}]