George spends an inordinate amount of time working out at his health club. Despite the fact that he is already well-muscled, he constantly frets and worries that he is too "puny" and not "manly" enough. His behavior is typical of someone with ________.

A) Korsakoff's syndrome
B) muscle dysmorphia
C) bulimia nervosa
D) anorexia nervosa

George's behavior is typical of someone with muscle dysmorphia, a disorder in which individuals become obsessed with building muscle and having a muscular body despite already being well-muscled or even muscularly large. Korsakoff's syndrome is a disorder typically associated with alcohol abuse and results in memory problems and confusion. Bulimia nervosa and anorexia nervosa are eating disorders, and there is no indication in the scenario that George's behavior is driven by concerns about his weight or body shape.