A nurse is reinforcing education to a newly licensed nurse about comorbidities associated with cluster B personality disorders. The nurse should identify which of the following disorders as a comorbidity?

A. "Obsessive-compulsive disorder.": Obsessive-compulsive disorder (OCD) is more commonly associated with cluster C personality disorders, particularly obsessive-compulsive personality disorder, which involves rigid perfectionism and a preoccupation with orderliness. B. "Schizophrenia.": Schizophrenia is not a common comorbidity of cluster B personality disorders. It is more closely linked to schizotypal personality disorder, a cluster A disorder, which involves eccentric behaviors and cognitive distortions. C. "General anxiety disorder.": Generalized anxiety disorder (GAD) is more frequently seen in cluster C personality disorders, such as avoidant and dependent personality disorders, which are characterized by excessive fearfulness and anxiety-driven behaviors. D. "Anorexia nervosa.": Anorexia nervosa is commonly comorbid with cluster B personality disorders, particularly borderline personality disorder, due to emotional dysregulation, impulsivity, and an intense fear of abandonment that can contribute to disordered eating behaviors.