Severe Unipolar Depression Is Less Common in Adults Older Than

Severe unipolar depression is less common in adults older than age 65. According to the text, one possible reason for this is that:

A) older adults are less likely to seek medical help and, therefore, remain undiagnosed.
B) depression in older adults is commonly misdiagnosed as an anxiety disorder.
C) severe depression is associated with health problems that could prevent affected adults from living to an old age.
D) the DSM-5 criteria to diagnose severe unipolar depression require that the condition present in childhood.