<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 31-year-old man presents with a headache, myalgias, nausea, irritability, and forgetfulness. He developed these symptoms gradually over the past 3 months. He is a motor mechanic, and he changed his place of work 4 months ago. He smokes a half a pack of cigarettes per day. His vaccinations are up to date. On presentation, his vital signs are as follows: blood pressure is 14570 mm Hg, heart rate is 94min, respiratory rate is 17min, and temperature is 36.8C 98.2F. Physical examination reveals diffuse erythema of the face and chest and slight abdominal distention. Neurological examination shows symmetrical brisk upper and lower extremities reflexes. Blood tests show the following results:pH 7.31Po2 301 mm HgPco2 28 mm HgNa 141 mEqLK 4.3 mEqLCl- 109 mEqLHCO3- 17 mEqLBase Excess -3 mEqLCarboxyhemoglobin 38Methemoglobin 1Serum cyanide 0.35 mcgmL Reference range 0.51 mcgmLWhich of the following statements about the patients condition is true?? A: The patients symptoms are a consequence of his essential hypertension., B: Chronic cyanide exposure is the main cause of patients condition., C: This patients symptoms are due to CO-induced inactivation of cytochrome oxidase and carboxyhemoglobin formation., D: Viral infection should be suspected in this patient., E: This patient has disrupted glycolysis due to inactivation of fructose-bisphosphate aldolase.,  <response>: This is a clinical case scenario involving a 31-year-old man with nonspecific symptoms like headache, myalgias, nausea, irritability, and forgetfulness that have developed over the past 3 months. Key details in the history include his occupation as a motor mechanic, recent change in workplace 4 months ago, smoking history, and unremarkable vaccinations. Vital signs show mild hypertension and tachycardia. Physical exam is significant for erythema and abdominal distention. Reflexes are brisk. Lab results show a primary respiratory alkalosis low CO2 and an elevated carboxyhemoglobin level. Serum cyanide level is within normal limits.Based on the gradual symptom onset, occupational history, smoking status, respiratory alkalosis, and elevated carboxyhemoglobin, this appears to be a case of carbon monoxide CO poisoning from chronic low-level exposure. The change in workplace likely exposed him to a new source of CO. Choice C directly identifies CO toxicity as the cause and is likely the correct answer. Hypertension is unlikely to explain his constellation of symptoms. Cyanide, viral infection, and glycolysis disruption do not fit with the provided history and lab data.C: This patients symptoms are due to CO-induced inactivation of cytochrome oxidase and carboxyhemoglobin formation. 