Melody's Mother Has Never Had a Great Memory When It

Melody's mother has never had a great memory when it comes to intricate details, but lately she is noticing more of a loss. Five years ago, her mother was diagnosed with a slight case of dementia. Lately, she is demonstrating confusion and other major changes in her way of thinking. Testing from the mother's doctor confirms that brain cells are failing and an assessment by a clinical social worker clarifies what disorder?

A) Cognitive delay syndrome
B) Autism syndrome
C) Social identity disorder
D) Alzheimer's disease