Tanya's Parents Describe Tanya as the Perfect Daughter, Considerate, Obedient

Tanya's parents describe Tanya as the perfect daughter, considerate, obedient, and helpful.Recently, they have noticed that she has lost a considerable amount of weight, is obsessed with dieting and relentless exercise.Although her parents have told her that she has lost enough weight, Tanya still feels like she needs to lose more weight.From these observations, it appears that Tanya is suffering from

A) anorexia nervosa.
B) bulimia nervosa.
C) a taste aversion.
D) the behavioral dieting syndrome.