<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 24-year-old man is brought to the emergency department because of violent jerky movements of his arms and legs that began 30 minutes ago. His father reports that the patient has a history of epilepsy. He is not responsive. Physical examination shows alternating tonic jerks and clonic episodes. There is blood in the mouth. Administration of intravenous lorazepam is begun. In addition, treatment with a second drug is started that alters the flow of sodium ions across neuronal membranes. The second agent administered was most likely which of the following drugs?? A: Topiramate, B: Fosphenytoin, C: Lamotrigine, D: Phenobarbital, E: Carbamazepine,  <response>: This is a clinical vignette describing a 24-year-old man with a history of epilepsy who is brought to the ER with violent jerky movements of his arms and legs, unresponsiveness, tonic-clonic seizures, and blood in his mouth. He is given IV lorazepam, a benzodiazepine that enhances GABA activity, to control the seizures acutely. The question asks which additional anticonvulsant drug that alters sodium ion flow was most likely also administered.Topiramate, lamotrigine, and carbamazepine are anticonvulsants but do not directly affect sodium channels. Fosphenytoin is a prodrug of phenytoin and acts primarily by blocking voltage-gated sodium channels. Phenobarbital enhances GABA activity like benzodiazepines but also blocks sodium channels. Of these choices, fosphenytoin and phenobarbital are the most likely options based on their mechanism of action on sodium channels.B: Fosphenytoin 