In Bulimia Nervosa, Erosion of Dental Enamel and Callouses on the Backs

In bulimia nervosa, erosion of dental enamel and callouses on the backs of the hands

A) is predictive of a suicide attempt among younger women.
B) are among some of the ways the disorder is hard on the body.
C) discriminates acute from chronic symptom expression of purging.
D) has been found to be an unreliable indicator of self-induced vomiting.