An Elderly Patient Has Symptoms of Depression and the Patient's

An elderly patient has symptoms of depression and the patient's daughter asks about possible Alzheimer's disease (AD) since there is a family history of this disease. A screening evaluation shows no memory loss. What is the initial step in managing this patient?

A) Order brain imaging studies such as CT or MRI.
B) Perform genetic testing to identify true risk.
C) Prescribe a trial of an antidepressant medication.
D) Recommend a trial of a cholinesterase inhibitor drug.