<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 67-year-old woman with chronic kidney disease, hypertension, and diabetes mellitus presented with congestive heart failure and underwent uneventful 3-vessel coronary artery bypass surgery. Within 20 hours, she was extubated and all infusions except nitroprusside were stopped. On the 4th postoperative day, she deteriorated, exhibiting restlessness, tachypnea, tachycardia, and hypotension. Inotropes, vasopressors and bicarbonate infusions were started. Continuous hemodialysis was initiated, yet lactate levels continued to rise. Her chart clarified that she had received 319 mg of nitroprusside over 72 hours. What is the most likely cause of her condition?? A: Cyanide toxicity, B: Carbon monoxide poisoning, C: Sulfmethemoglobinemia, D: Methemoglobinemia, E: Anemia,  <response>: This is a medical question asking about the most likely cause of a patients condition after coronary artery bypass surgery and nitroprusside infusion. The key details are that the patient received 319 mg of nitroprusside over 72 hours and then deteriorated with restlessness, tachypnea, tachycardia, hypotension, and rising lactate levels despite treatment. This suggests a toxicity related to the nitroprusside infusion. Of the choices, cyanide toxicity is a known adverse effect of nitroprusside administration, as the drug metabolizes to produce cyanide. The other choices are less plausible causes in this scenario.A: Cyanide toxicity 