<prompt> Loss of pulmonary surfactant in premature infant leads to:Pulmonary edemaCollapse of alveoliElastic recoil of lungsAll  <response>: d. AllRef: Nelsons 20e p 850-857, Ghai 8e p 169-170Surfactant deficiency is the primary cause of RDS; Alveolar atelectasis, hyaline membrane formation interstitial edema are seen in RDS. 