The Patient Says That She Has Been Feeling Sad and Having

The patient says that she has been feeling sad and having difficulty sleeping over the past 6 weeks. She says she has lost her appetite and has lost about 10 lb. This is the first time she has felt this way and she cannot recall any specific unsetting event. Given this minimal information, an initial diagnosis might be

A) Adjustment disorder with depression
B) Seasonal affective disorder
C) Major depression, single episode
D) Major depression with catatonic features