<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 55-year-old man is brought to the physician because of inappropriate behavior for the past 6 months. He has been making inappropriate comments and jokes while talking to friends and family members. He was arrested 3 weeks ago while trying to kiss strangers on the street. He has no interest in talking to his daughter or playing with his grandchildren. During this period, he has developed a strong desire for chocolate pudding and potato chips and has gained 10 kg 22 lb. He appears unkempt. Vital signs are within normal limits. Physical examination is unremarkable. Mental status examination shows apathy and a blunt affect. He avoids answering questions and instead comments on the individuals he saw in the waiting room. Mini-Mental State Examination score is 2830. A complete blood count and serum concentrations of glucose, creatine, and electrolytes are within the reference range. Which of the following is the most likely diagnosis?? A: Parkinson disease, B: Amyotrophic lateral sclerosis, C: Normal pressure hydrocephalus, D: Wilson disease, E: Frontotemporal dementia,  <response>: Based on the information provided in the question stem, the key findings are:- Inappropriate behavior and comments for the past 6 months- Arrested for trying to kiss strangers - Lack of interest in family members- Developed cravings for specific foods and weight gain- Appears unkempt and has apathyblunted affect- Avoids answering questions and makes tangential comments - MMSE score 2830- Normal physical exam and lab resultsThese symptoms point towards a neurodegenerative disease affecting the frontal and temporal lobes. The inappropriate behavior, lack of interest in family, and tangential speech indicate frontal lobe dysfunction. The cravings and lack of inhibition point more specifically to orbitofrontal cortex involvement. The relatively preserved MMSE score indicates the parietal and occipital lobes are still relatively intact. Of the choices, frontotemporal dementia best matches this clinical presentation. The other choices do not explain the symptoms described.E: Frontotemporal dementia 