<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 31-year-old man presents to his primary care physician endorsing three months of decreased sleep. He reports an inability to fall asleep; although once asleep, he generally sleeps through the night and wakes up at a desired time. He has instituted sleep hygiene measures, but this has not helped. He has not felt anxious or depressed and is otherwise healthy. You prescribe him a medication that has the potential side effect of priapism. From which of the following locations is the neurotransmitter affected by this medication released?? A: Substantia nigra, B: Raphe nucleus, C: Locus ceruleus, D: Nucleus accumbens, E: Posterior pituitary,  <response>: This is a medical question asking about the location of the neurotransmitter affected by a medication prescribed for insomnia that can cause priapism as a side effect. Based on the information provided, the medication is likely a dopamine agonist that acts on dopamine receptors. Priapism is a known side effect of dopamine agonists, which increase dopamine signaling. The choices list different brain regions, so the task is to identify which one contains the dopamine-releasing neurons affected by this medication.B: Raphe nucleus 