For the Past Year Xavier Has Been Under a Lot

For the past year Xavier has been under a lot of stress and has felt compelled to consume mass quantities of food in secret. Afterward, he feels embarrassed and ashamed and resolves to stop doing it, but he's unable to stop. Xavier has gained weight and may be suffering from

A) anorexia nervosa.
B) bulimia nervosa.
C) binge eating disorder.
D) binge-and-purge syndrome.