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': 'A baby is born at 27 weeks of gestation required mechanical ventilation for next 4 weeks & O2 for next 1 week. He maintained at room temperature subsequently. As per new Bronchopulmonary dysplasia definition, he has which of the following – \nSelect and explain. \nA. Mild BPD, B. Moderate BPD, C. Severe BPD, D. No BPD', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]