Ever Since Kerry Lost Her Job, She Has Been Feeling

Ever since Kerry lost her job, she has been feeling worthless.It's been more than two weeks now since she slept well.She has lost a lot of weight and keeps thinking about committing suicide.In the context of disorders involving emotion and mood, it can be inferred that Kerry is most likely suffering from

A) obsessive-compulsive disorder.
B) major depressive disorder.
C) social anxiety disorder.
D) antisocial personality disorder.