Frequent Episodes (Once a Week for at Least Three Months)of

Frequent episodes (once a week for at least three months) of binge eating followed by inappropriate purging (that is,self-induced vomiting,excessive exercise,use of laxatives) is a characteristic of which of the following eating disorders?

A) anorexia nervosa
B) bulimia nervosa
C) binge eating disorder
D) All of the above.
E) None of the abovE.