<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 82-year-old woman is brought to the physician by her son because he is concerned about her forgetfulness for the past 2 years. She occasionally walks into a room and forgets why she went there and often forgets where she left her keys. She is sometimes unable to recall a familiar individuals name. She reports that she has become slower at completing sudoku puzzles. She has been living independently since the death of her husband 3 years ago. She goes shopping, cooks her own meals, and plays bridge with her friends every weekend. She is not anxious about her memory lapses. She has no trouble sleeping but has been getting up earlier than she used to. She has hypertension that is managed with hydrochlorothiazide. She appears healthy. Vital signs are within normal limits. She is oriented to person, place, and time. Examination shows a normal gait. She describes her mood as good and her speech is normal. Her thought process is organized and her judgement is intact. She makes one error when performing serial sevens. The remainder of the examination shows no abnormalities. Which of the following is the most likely cause of this patients symptoms?? A: Aging, B: Alzheimers disease, C: Lewy-body dementia, D: Vascular Dementia, E: Normal pressure hydrocephalusn,  <response>: This is a question about identifying the most likely cause of memory loss and cognitive decline in an elderly patient. The key findings in the stem are:- 82 year old woman with 2 year history of forgetfulness and mild cognitive impairment - Forgets why she walked into a room, forgets location of keys, occasionally forgets names- Slower at completing puzzles, but still able to live independently- No anxiety about memory issues- Normal vital signs and physical exam except one error on serial 7s- Well-controlled hypertension, otherwise healthyThe answer choices list different types of dementia and normal aging. Based on the gradual onset and mild nature of the symptoms, Alzheimers disease is less likely in this early stage. Lewy body dementia also typically has more variation in symptoms and more psychiatric manifestations. Vascular dementia may present similarly but is more commonly associated with stroke risk factors like uncontrolled hypertension, which this patient does not have. Normal pressure hydrocephalus causes more gait impairment. That leaves normal aging as the most likely choice given the limited nature of this patients cognitive changes.A: Aging 