<prompt> A baby is born at 27 weeks of gestation required mechanical ventilation for next 4 weeks 02 for next 1 week. He maintained at room temperature subsequently. As per new Bronchopulmonary dysplasia definition, he has which of the following ?Mild BPDModerate BPDSevere BPDNo BPD  <response>: Ans. is c i.e., Severe BPD 