Nora Admits That She's Had Episodes of Uncontrollable Eating Once

Nora admits that she's had episodes of uncontrollable eating once or twice a week for the past few months.During these episodes,she feels compelled to eat everything in sight.Afterward,she always vomits so that she won't gain weight.Which other factor would have to be present to meet the diagnostic criteria for bulimia nervosa?

A) history of intense dieting
B) signs of esophagitis and damage to the teeth
C) body weight that is significantly underweight
D) extreme concern with one's body shape and weight