A Client Diagnosed with Major Depressive Disorder States,"I've Been Feeling

A client diagnosed with major depressive disorder states,"I've been feeling 'down' for 3 months.Will I ever feel like myself again?" Which reply by the nurse will best assess this client's affective symptoms?

A) "Have you been diagnosed with any physical disorder within the last 3 months?"
B) "Have you ever felt this way before?
C) "People who have mood changes often feel better when spring comes."
D) "Help me understand what you mean when you say, 'feeling down'?"