<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 17-year-old boy is brought to the physician by his mother because of increasingly withdrawn behavior for the last two years. His mother reports that in the last 23 years of high school, her son has spent most of his time in his room playing video games. He does not have any friends and has never had a girlfriend. He usually refuses to attend family dinner and avoids contact with his siblings. The patient states that he prefers being on his own. When asked how much playing video games means to him, he replies that its okay. When his mother starts crying during the visit, he appears indifferent. Physical and neurologic examinations show no other abnormalities. On mental status examination, his thought process is organized and logical. His affect is flattened. Which of the following is the most likely diagnosis?? A: Schizophreniform disorder, B: Schizoid personality disorder, C: Antisocial personality disorder, D: Avoidant personality disorder, E: Paranoid personality disorder,  <response>: Based on the information provided in the question stem, the key findings are:- Increasingly withdrawn behavior over the past 2 years- Spends most of time alone playing video games, no friends, never had a girlfriend- Avoids family interactions and contact with siblings- Prefers being alone- Appears indifferent when mother cries during visit - Organized and logical thought process- Flattened affectThis history of social withdrawal, lack of interest in relationships, and indifference to emotional situations points towards a diagnosis of schizoid personality disorder. The lack of delusionshallucinations makes schizophrenia less likely. The absence of impulsive or criminal behavior makes antisocial personality disorder unlikely. The lack of anxiety about social situations makes avoidant personality disorder less likely. And there are no symptoms suggestive of paranoid personality disorder.Therefore, based on the key findings, the most likely diagnosis is schizoid personality disorder.B: Schizoid personality disorder 