Which of the Following Is True of Major Depressive Disorder

Which of the following is true of major depressive disorder?

A) Fewer than half of those who suffer an initial major depressive episode will eventually have a recurrence.
B) Major depression is never accompanied by psychotic features such as delusions.
C) All individuals who experience major depression never have a full return to previous levels of functioning.
D) Major depressive disorder can only be diagnosed if the individual began experiencing depressive episodes prior to age 18.