Mark tends to overeat high calorie foods but feels guilty afterward.Even so,it is almost as if he cannot help himself.Which eating disorder is he likely to be diagnosed with?

A) anorexia nervosa
B) bulimia nervosa
C) binge-eating disorder
D) purging disorder

Mark's symptoms indicate binge-eating disorder, which is characterized by frequent episodes of overeating accompanied by a sense of loss of control and feelings of guilt, shame, or disgust. Unlike bulimia nervosa, binge-eating episodes are not followed by compensatory behaviors such as purging or excessive exercise. Anorexia nervosa is characterized by restrictive eating and intense fear of gaining weight, while purging disorder involves recurrent purging behaviors without binge eating.