<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 75-year-old woman presents to her primary care physician with her son because she is convinced that people are stealing from her. Her son claims she has been misplacing her medications and money throughout the house. She recently lost her husband to old age and has become reclusive and no longer wants people to visit. Physical examination is unremarkable and the patient is oriented to person, time, and place. A mini-mental status examination MMSE is performed and she has difficulty recalling words after 5 minutes and also has problems with serial subtraction. Which of the following is the most likely diagnosis in this patient?? A: Delirium, B: Dementia, C: Histrionic personality disorder, D: Schizoid personality disorder, E: Schizophrenia,  <response>: This is a clinical vignette describing a 75-year-old woman who is exhibiting paranoia, memory loss, and social withdrawal. She recently lost her husband and has become reclusive. On mental status examination, she has difficulty with recall and serial subtraction, suggesting cognitive impairment. The most likely diagnosis given her age, recent bereavement, and cognitive deficits on exam is dementia. Delirium could cause acute confusion but she has no evidence of acute change in mental status. The personality disorders and schizophrenia would not explain her cognitive deficits.B: Dementia 