<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 47-year-old man with a history of alcoholism undergoes an upper endoscopy, which reveals a superficial mucosal tear in the distal esophagus. Laboratory results show a metabolic alkalosis. What is the most likely mechanism of the acidbase disturbance in this patient?? A: B12 deficiency, B: Anemia, C: Vomiting, D: Hypokalemia, E: Hepatic cirrhosis,  <response>: This is a patient with a history of alcoholism who has an esophageal tear found on endoscopy. The key finding is the metabolic alkalosis. In alcoholic patients, metabolic alkalosis is most commonly caused by vomiting, which results in loss of gastric acid HCl. B12 deficiency, anemia, hypokalemia, and hepatic cirrhosis can all cause metabolic acidosis rather than alkalosis. Therefore, the most likely cause of the metabolic alkalosis in this patient is vomiting.C: Vomiting 