question: Q:A 1-year-old boy is brought to the emergency department after his mother witnessed him swallow a nickel-sized battery a few hours ago. She denies any episodes of vomiting or hematemesis. The vital signs include: temperature 37.0°C (98.6°F), blood pressure 95/45 mm Hg, pulse 140/min, respiratory rate 15/min, and oxygen saturation 99% on room air. On physical examination, the patient is alert and responsive. The oropharynx is clear. The cardiac exam is significant for a grade 2/6 holosystolic murmur loudest at the left lower sternal border. The lungs are clear to auscultation. The abdomen is soft and nontender with no hepatosplenomegaly. Bowel sounds are present. What is the most appropriate next step in the management of this patient?? 
  {'A': 'Induce emesis to expel the battery', 'B': 'Induce gastrointestinal motility with metoclopramide to expel the battery', 'C': 'Reassurance and observation for the next 24 hours', 'D': 'Computed tomography (CT) scan to confirm the diagnosis ', 'E': 'Immediate endoscopic removal'},