This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Neonatal Resuscitation, Subject name: Pediatrics
[{'content': 'Resuscitation of term neonates should be initiated with how much oxygen concentration, if they require positive pressure ventilation? \nSelect and explain. \nA. 100%, B. 50%, C. 30%, D. 21%', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Resuscitation of term neonates- initiated with room air (21 % O2) Preterm neonates- 21 to 30% O2 (intermediate concentration)', 'role': 'assistant'}]