Anorexia Nervosa Is A(n)

Anorexia nervosa is a(n) :

A) eating disorder that involves a binge-and-purge sequence on a regular basis.
B) anxiety disorder whose chief symptom is unrealistic fear of food.
C) an obsessive-compulsive disorder involving ritualized, continual eating.
D) eating disorder that involves the relentless pursuit of thinness through starvation.