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: Psychiatry
All the following are featuring Alzheimer's disease except: 
Select and explain. 
A. Cerebellar atrophy, B. Common in 5th and 6th decade, C. Atrophied gyri widened sulci, D. Peogressive dementia
A: Cerebellar atrophy
Answer: A: Cerebellar atrophy 
Explanation: A i.e. Cerebellar atrophy