<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 9-year-old boy is brought to the physician by his mother because of poor performance in school for the last year. He has difficulty sitting still at his desk, does not follow the teachers instructions, and frequently blurts out answers in class. He often gets sent outside the classroom for failing to work quietly. At hockey practice, he does not wait his turn and has difficulty listening to his coachs instructions. His mother reports that he is easily distracted when she speaks with him and that he often forgets his books at home. Physical examination shows no abnormalities. Which of the following is the most appropriate pharmacotherapy?? A: Atomoxetine, B: Suvorexant, C: Risperidone, D: Fluoxetine, E: Varenicline,  <response>: This is a clinical vignette describing a 9-year-old boy with symptoms of inattention, hyperactivity, and impulsivity that are impairing his functioning at school and in sports. He has difficulty sitting still, following instructions, and waiting his turn. He is easily distracted and forgetful. This presentation is most consistent with attention deficit hyperactivity disorder ADHD. The question asks for the most appropriate pharmacotherapy. Atomoxetine is a first-line medication for treating ADHD in children. It is a selective norepinephrine reuptake inhibitor that increases norepinephrine levels, which improves attention and reduces hyperactivity and impulsivity. Suvorexant is an orexin receptor antagonist used to treat insomnia. Risperidone is an atypical antipsychotic sometimes used off-label to augment treatment in severe cases of ADHD, but is not first-line. Fluoxetine is an SSRI antidepressant that would not be appropriate as monotherapy. Varenicline is a nicotinic receptor partial agonist used for smoking cessation.A: Atomoxetine 