<prompt> True about respiratory distress syndrome is all except:Damage to type III pneumocyteHistological feature is diffuse alveolar damageFormation of hyaline membrane in this conditionExcellent response to oxygen therapy  <response>: In adult respiratory distress syndrome, there is damage to type-I II pneumocytes as well as formation of hyaline membrane due to endothelial cell damage which increases vessel permeability - formation of membrane with fibrinogen-Hyaline appearance. Histological feature is diffuse alveolar damage. In such condition, oxygen given to patient cannot diffuse along the epithelial wall, so there is poor response to oxygen therapy. 