<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 56-year-old man presents with constipation and trouble urinating for the past day. He says that he tried drinking a lot of water but that did not help. He also says that he has been tired all the time recently. Past medical history is significant for schizophrenia, diagnosed 3 months ago, and being managed on antipsychotic medication. Current medications also include sildenafil. The vital signs include blood pressure 8045 mm Hg, respiratory rate 23min, heart rate 86min and temperature 38.7C 101.7F. On physical examination, the patient appears agitated and confused. Which of the following medications is the most likely cause of this patients presentation?? A: Lithium, B: Haloperidol, C: Ziprasidone, D: Aripiprazole, E: Chlorpromazine,  <response>: This is a clinical vignette about a 56-year-old man with constipation, urinary retention, fatigue, and fever who has a history of schizophrenia managed with antipsychotic medication. The question is asking which antipsychotic medication is most likely causing his current symptoms.Based on the information provided, the patients vital signs show hypotension and tachycardia, which along with the fever suggest he may be experiencing an anticholinergic toxidrome. Anticholinergic side effects like constipation, urinary retention, confusion, and agitation are most commonly seen with first generation antipsychotics like chlorpromazine. The other answer choices are all second generation atypical antipsychotics which have lower anticholinergic activity.E: Chlorpromazine 