This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Organic Mental Disorders, Subject name: Psychiatry
Features of lewy body dementia are all except: 
Select and explain. 
A. Recurrent visual hallucination, B. Spontaneous motor feature, C. Autonomic dysfunction, D. Fluctuating cognition
C: Autonomic dysfunction
Answer: C: Autonomic dysfunction 
Explanation: Revised criteria for the clinical diagnosis of Lewy body dementia: 1.Fluctuating Cognition 2.Recurrent Visual hallucination 3.REM sleep behaviour disorder 4.Cardinal feature of Parkinsonism (one or more)