The Gene Responsible for Producing Amyloid Precursor Protein (APP)appears to Explain

The gene responsible for producing amyloid precursor protein (APP) appears to explain the development of

A) Alzheimer's type dementia in general.
B) Alzheimer's type dementia that develops very late in life.
C) non-Alzheimer's type dementia that tends to affect unique populations, such as those with strong family history of the disorder.
D) early onset Alzheimer's type dementia and the higher frequency of the disorder in Down Syndrome patients.