Q. A 5-year-old child gets admitted to the hospital with the diagnosis of bronchopulmonary Dysplasia (BPD). If the child is at the third stage, what would be the clinical symptoms present? [AIIMS Raipur Grade -II 2017]

(a) Profuse hyaline membranes and patchy mucosal cilia loss
(b) Interstitial fibrosis and epithelial proliferation
(c) Edema of the interstitium and necrosis of alveolar cells
(d) Alveolar collapse and difficulty in oxygenation