A 34-year-old woman with untreated Graves disease is brought to the emergency department with fever, agitation, vomiting, and palpitations 1 day after emergency abdominal surgery. She is diaphoretic and confused, with heart rate 168 per minute and blood pressure 170/90 mm Hg. Which of the following is the best next step in management?

1. A)Low dose dexamethasone suppression test
2. B)Propranolol, propylthiouracil, glucocorticoids, and supportive careGABARITO
3. C)Phenoxybenzamine only
4. D)Desmopressin and free water
5. E)Levothyroxine only