Amanda Has Been Concerned Lately with How Much She Weighs

Amanda has been concerned lately with how much she weighs. She tries to diet, but she hasn't lost much weight. Amanda weighs about what someone her age and height should, but she still thinks she is overweight. Although it embarrasses Amanda, there are times when she will eat a significant amount of food at one sitting. After these times, however, Amanda will make herself throw up to avoid gaining weight from the food she ate. The disorder that BEST matches Amanda's behaviors is:

A) bulimia nervosa.
B) anorexia nervosa.
C) binge eating disorder.
D) purging.