question: Q:A 7-year-old girl is brought to the physician because of a 1-month history of worsening fatigue, loss of appetite, and decreased energy. More recently, she has also had intermittent abdominal pain and nausea. She is at the 50th percentile for height and 15th percentile for weight. Her pulse is 119/min and blood pressure is 85/46 mm Hg. Physical examination shows darkened skin and bluish-black gums. The abdomen is soft and nontender. Serum studies show:
  Sodium 133 mEq/L
  Potassium 5.3 mEq/L
  Bicarbonate 20 mEq/L
  Urea nitrogen 16 mg/dL
  Creatinine 0.8 mg/dL
  Glucose 72 mg/dL
  Which of the following is the most appropriate pharmacotherapy?"? 
  {'A': 'Succimer', 'B': 'Deferoxamine', 'C': 'Isoniazid + rifampin + pyrazinamide + ethambutol', 'D': 'Glucocorticoids', 'E': 'Norepinephrine'},