Which of the Following Is True

Multiple Choice

Which of the following is true?

A) In adulthood,nearly all individuals with Down syndrome develop amyloid plaques and neurofibrillary tangles.
B) In adulthood,nearly all individuals with Down syndrome develop cognitive impairments similar to those seen in Alzheimer's patients.
C) The APOE gene has been implicated in both Down syndrome and Alzheimer's disease.
D) The PS1 gene has been implicated in both Down syndrome and Alzheimer's disease.