Sophie Stated That She Is Deeply Saddened by the Recent

Sophie stated that she is deeply saddened by the recent death of her grandmother. José thinks that Sophie is suffering from unipolar depression because of this event. Which statement MOST strongly refutes José's assumption?

A) Unipolar depression is rarely triggered by uncontrollable losses.
B) Unipolar depression is often accompanied by periods of mania after someone loses a loved one.
C) Unipolar depression is often diagnosed shortly after a person experiences the loss of a loved one.
D) Unipolar depression differs from the relatively short-lived sadness we fell from the loss of a loved one.