question: Q:A 4-hour-old male newborn has perioral discoloration for the past several minutes. Oxygen by nasal cannula does not improve the cyanosis. He was delivered by cesarean delivery at 37 weeks' gestation to a 38-year-old woman, gravida 3, para 2. Apgar scores were 8 and 9 at 1 and 5 minutes, respectively. The mother has type 2 diabetes mellitus that was well-controlled during the pregnancy. She has not received any immunizations since her childhood. The newborn's temperature is 37.1°C (98.8°F), pulse is 170/min, respirations are 55/min, and blood pressure is 80/60 mm Hg. Pulse oximetry shows an oxygen saturation of 85%. Cardiopulmonary examination shows a 2/6 holosystolic murmur along the lower left sternal border. The abdomen is soft and non-tender. Echocardiography shows pulmonary arteries arising from the posterior left ventricle, and the aorta rising anteriorly from the right ventricle. Which of the following is the most appropriate next step in the management of this patient?? 
  {'A': 'Reassurance', 'B': 'Prostaglandin E1 administration', 'C': 'Indomethacin administration', 'D': 'Surgical repair', 'E': 'Obtain a CT Angiography\n"'},