Alzheimer Disease Is the Most Common Form of Dementia

Alzheimer disease is the most common form of dementia.Alzheimer disease is a rapidly progressive degenerative brain disease that can diminish a person's ability to think,remember,and perform simple tasks.

A) Both statements are true.
B) Both statements are false.
C) The first statement is true; the second is false
D) The first statement is false; the second is true.