Anorexia Nervosa and Bulimia Nervosa Are Often Viewed as Variants

Anorexia nervosa and bulimia nervosa are often viewed as variants of the same disorder because

A) both persons with anorexia and persons with bulimia have distorted body images.
B) many patients straddle the two diagnoses.
C) both anorexia and bulimia are correlated with obsessive-compulsive disorder.
D) both disorders display the same pattern of distribution in the general population.
E) all of the above