<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 17-year-old male presents with altered mental status. He was recently admitted to the hospital due to a tibial fracture suffered while playing soccer. His nurse states that he is difficult to arouse. His temperature is 98.6 deg F 37 deg C, blood pressure is 13080 mm Hg, pulse is 60min, and respirations are 6min. Exam is notable for pinpoint pupils and significant lethargy. Which of the following describes the mechanism of action of the drug likely causing this patients altered mental status?? A: Neuronal hyperpolarization due to potassium efflux, B: Neuronal depolarization due to potassium influx, C: Neuronal hyperpolarization due to sodium influx, D: Neuronal depolarization due to sodium efflux, E: Neuronal hyperpolarization due to chloride influx,  <response>: This is a clinical vignette describing a 17-year-old male with altered mental status, lethargy, and pinpoint pupils. Based on the pinpoint pupils and respiratory depression, this is likely an opioid toxidrome. The question is asking about the mechanism of action of the drug causing his symptoms. Opioids work by binding to and activating opioid receptors, which are coupled to Gio proteins. Activation of these Gio proteins leads to inhibition of adenylyl cyclase, decreased cAMP production, and hyperpolarization of neurons due to efflux of potassium.So the correct answer should describe neuronal hyperpolarization due to potassium efflux.A: Neuronal hyperpolarization due to potassium efflux 