question: Q:A 29-year-old woman comes to the physician because of intermittent episodes of sharp chest pain and palpitations. She appears nervous. Her pulse is 115/min and irregularly irregular, and blood pressure is 139/86 mmHg. Examination shows a fine tremor on both hands and digital swelling; the extremities are warm. There is retraction of the right upper eyelid. Which of the following is the most appropriate next step in the management of this patient?? 
  {'A': 'Amiodarone', 'B': 'Propylthiouracil', 'C': 'Warfarin', 'D': 'Methimazole', 'E': 'Propranolol'},