This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory System, Subject name: Pediatrics
[{'content': 'Bag and mask ventilation is contraindicated in all except? \nSelect and explain. \nA. Transient tachypnea of newborn, B. Tracheo - esophageal fistula, C. Diaphragmatic hernia, D. Meconium aspiration syndrome', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Transient tachypnea of newborn Bag and mask ventilation is contraindicated in* Diaphragmatic hernia,* Tracheo-esophageal fistula and* Meconium aspiration syndrome.", 'role': 'assistant'}]