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Brenda is a college student suffering from bulimia nervosa. When her roommate is at class, Brenda regularly binges on large quantities of food, sometimes up to 3,000 calories in an hour. She then feels so guilty and has an overwhelming desire to purge the calories and food. What type of purging mechanism might a bulimic engage in?
i. Excessive exercising
ii. Self-induced vomiting
iii. Laxative abuse
iv. Bingeing on more food