<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 64-year-old man is brought to the emergency department by his wife with a 2-hour history of diarrhea and vomiting. He says that he felt fine in the morning, but noticed that he was salivating, sweating, and feeling nauseated on the way home from his work as a landscaper. The diarrhea and vomiting then started about 10 minutes after he got home. His past medical history is significant for depression and drug abuse. His wife says that he has also been more confused lately and is afraid he may have ingested something unusual. Physical exam reveals miosis, rhinorrhea, wheezing, and tongue fasciculations. Which of the following treatments would most likely be effective for this patient?? A: Ammonium chloride, B: Atropine, C: Fomepizole, D: Naloxone, E: Sodium bicarbonate,  <response>: This is a clinical vignette about a 64-year-old man with acute onset diarrhea, vomiting, salivation, sweating, nausea, miosis, rhinorrhea, wheezing, and tongue fasciculations. His history is significant for depression, drug abuse, and recent confusion. The description of miosis, rhinorrhea, wheezing, and tongue fasciculations indicates that he likely has cholinergic excess, possibly from ingesting an anticholinesterase agent. Atropine blocks the effects of acetylcholine at muscarinic receptors and would be the most appropriate treatment. Ammonium chloride, fomepizole, naloxone, and sodium bicarbonate would not be effective treatments.B: Atropine 