Which Is NOT a Statement That Researchers (As of 2015)are

Multiple Choice

Which is NOT a statement that researchers (as of 2015) are apt to make about Alzheimer's disease?

A) "We want to diagnose Alzheimer's at the earliest possible stage."
B) "We want to find out what causes the formation of amyloid."
C) "We want to devise tests that predict the onset of the disease."
D) "We want to understand why people who do mental exercises rarely get Alzheimer's."