<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 46-year-old woman presents to a psychiatrist for evaluation. Three months prior, the patient moved to a new apartment building, and since then, she has become increasingly convinced that her doorman has been stealing her packages and going into her apartment while she is not home. She states that objects do not stay where she leaves them, and sometimes she expects mail but never receives it. She has filed numerous complaints with her leasing company. The building has 24-hour security footage, however, which has never shown any other person entering her apartment. On further questioning, the patient denies audiovisual hallucinations or changes in sleep, mood, energy levels, or eating. The family reports that her behavior and affect have not changed. The patient works as a pharmacist. She has no psychiatric history, although her father had a history major depressive disorder. Which of the following is the likely diagnosis?? A: Adjustment disorder, B: Delusional disorder, C: Narcissistic personality disorder, D: Paranoid personality disorder, E: Schizotypal personality disorder,  <response>: This question describes a 46-year-old woman who has recently developed delusional beliefs that her doorman is stealing her packages and entering her apartment when she is not home. There is no evidence to support her beliefs. Her behavior is otherwise normal, with no changes in mood, sleep, energy, eating, etc. She has no personal or family history of psychiatric illness, except for her fathers depression. Based on the sudden onset of a fixed, false belief not explained by the patients culture and lack of hallucinations or bizarre behavior, the likely diagnosis is delusional disorder. Adjustment disorder involves distressimpairment due to a stressor and would not explain her fixed false beliefs. Narcissistic and paranoid personality disorders are pervasive, lifelong patterns, not an acute condition. Schizotypal personality disorder may cause odd beliefs, but not delusions.B: Delusional disorder 