One Important Difference Between Early-Onset Alzheimer's Disease and Late-Onset Alzheimer's

Multiple Choice

One important difference between early-onset Alzheimer's disease and late-onset Alzheimer's disease is that in early-onset Alzheimer's ________

A) the condition is marked by cognitive decline.
B) only elderly people with Down syndrome are affected.
C) cognitive decline is quite slow.
D) cognitive decline is often rapid.