input: The following are multiple choice questions (with answers) about medical knowledge.   **Question:** A patient of CKD has presented with protracted vomiting. ABG shows pH = 7.40, pCO2 = 40 mm Hg, HCO3 = 25 mEq, Na=145 mEq/L, Chloride = 100 mEq/L, HCO3 = 24 mEq/L. What is the observation?   (A) Normal anion gap metabolic acidosis   (B) High anion gap metabolic acidosis   (C) No acid base abnormality   (D) High anion gap metabolic acidosis and metabolic alkalosis
output: ['(D) High anion gap metabolic acidosis and metabolic alkalosis <> answer', 'The following are multiple choice questions (with answers) about medical knowledge. <> instruction', '(A) Normal anion gap metabolic acidosis  (B) High anion gap metabolic acidosis  (C) No acid base abnormality  (D) High anion gap metabolic acidosis and metabolic alkalosis <> possible answers', '  A patient of CKD has presented with protracted vomiting. ABG shows pH = 7.40, pCO2 = 40 mm Hg, HCO3 = 25 mEq, Na=145 mEq/L, Chloride = 100 mEq/L, HCO3 = 24 mEq/L. What is the observation? <> context']