Autopsy on a 65-year-old Caucasian female with a past medical history of dementia reveals general atrophy of the cerebral cortex with narrowed gyri and broad sulci as well as neurofibrillary tangles...

Autopsy on a 65-year-old Caucasian female with a past medical history of dementia reveals general atrophy of the cerebral cortex with narrowed gyri and broad sulci as well as neurofibrillary tangles and plaques of amyloid-like protein on histology. What was the cause of her dementia?

A. AD

B. Parkinson disease

C. Lewy body dementia

D. Huntington disease