How does Alzheimer’s disease differ from other forms of dementia in terms of its classification and progression?

A. Alzheimer’s is a group of symptoms, while other dementias are singular diseases.

B. Alzheimer’s is a singular disease and the most common cause of dementia, while other dementias like vascular dementia are also significant causes.

C. Alzheimer’s progresses slower than other forms of dementia.

D. Alzheimer’s is not a cause of dementia