This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pediatrics
[{'content': 'Vomiting on first day of bih is seen in all EXCEPT: \nSelect and explain. \nA. Esophageal atresia, B. Amniotic gastritis, C. Aerophagy, D. Pyloric stenosis', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pyloric stenosisREF: Schwaz 8th ed p. 1486 Pyloric stenosis most commonly presents with non bilious vomiting at 4th week after bih.', 'role': 'assistant'}]