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It's A. Major depressive disorder.

Explanation: Similar to other eating disorder diagnoses, binge-eating disorder is characterized by high rates of other co-occurring psychiatric disorders. As in bulimia nervosa and anorexia nervosa, the most common comorbid psychiatric disorder diagnosis is depression, which affects about 50% of individuals with binge-eating disorder. Additionally, there are reasonably high rates of anxiety disorders, particularly panic disorder and simple phobia, although rates of obsessive-compulsive disorder and social phobia appear somewhat lower than in other eating disorders. Approximately 20%–25% of individuals with binge-eating disorder also display significant substance use disorder, most typically alcohol use disorder.

Muskin PR, ed. Study Guide to Psychiatry: A Companion to the American Psychiatric Publishing Textbook of Psychiatry, Sixth Edition. Arlington, VA: American Psychiatric Association Publishing; 63-64, 298-299. Click here to purchase. Members can purchase at a discount.