Early-Onset Alzheimer's,occurring Before Age 65,clearly Has a Genetic Basis as It

question 163

Multiple Choice

Early-onset Alzheimer's,occurring before age 65,clearly has a genetic basis as it runs strongly in a family and accounts for ____ cases of this disease.

• A)a relatively small portion of
• B)a moderate portion of
• C)a relatively large portion of
• D)almost all