It Has Been Over Two Years Since the Death of Her

It has been over two years since the death of her husband, and although Jenelle tries to go out with her friends for dinners and sometimes a concert, she still cannot seem to find much pleasure in life. Jenelle is most likely suffering from

A) a major depressive disorder.
B) dysthymic disorder.
C) a social phobia.
D) involuntary grief reaction.