<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 54-year-old man presents with 3 days of non-bloody and non-bilious emesis every time he eats or drinks. He has become progressively weaker and the emesis has not improved. He denies diarrhea, fever, or chills and thinks his symptoms may be related to a recent event that involved sampling many different foods. His temperature is 97.5F 36.4C, blood pressure is 13382 mmHg, pulse is 105min, respirations are 15min, and oxygen saturation is 98 on room air. Physical exam is notable for a weak appearing man with dry mucous membranes. His abdomen is nontender. Which of the following laboratory changes would most likely be seen in this patient?? A: Anion gap metabolic acidosis and hypokalemia, B: Metabolic alkalosis and hyperkalemia, C: Metabolic alkalosis and hypokalemia, D: Non-anion gap metabolic acidosis and hypokalemia, E: Respiratory acidosis and hyperkalemia,  <response>: This is a patient presenting with non-bloody, non-bilious vomiting after eating or drinking for 3 days. He has become progressively weaker. Important history includes recent event with sampling different foods, which raises suspicion for food poisoning. Vital signs show tachycardia and orthostasis, indicating dehydration. Physical exam shows dry mucous membranes, also indicating dehydration. The question asks which laboratory changes would most likely be seen. This patient likely has vomiting-induced metabolic alkalosis from loss of gastric acid. Dehydration and hypokalemia are also expected. Of the choices, metabolic alkalosis and hypokalemia fits this presentation best.C: Metabolic alkalosis and hypokalemia 