A Client Is Admitted with Signs and Symptoms of Early

A client is admitted with signs and symptoms of early Alzheimer disease.What would be used to confirm this client's diagnosis?

A) Abnormal CT scan findings of neuritic plaques and tangles in the brain
B) Client history and physical examination
C) Positive blood tests for beta-amyloid and tau proteins
D) Blood test for amyloid plaques and neurofibrillary tangles