<prompt> In a 32 weeks preterm baby the X ray showed diffuse opacities bilaterally. The diagnosis isCongenital cystic lungsRDSDiaphragmatic herniaTracheoesophageal fistula  <response>: B RDS RDS: Clinical features. Respiratory distress usually occurs within the first 6 hours of life. Clinical features include tachypnea, retractions, grunting, cyanosis, and decreased air entry. Diagnosis can be confirmed by chest X-ray. Radiological features include reticulogranular pattern, ground glass opacity, low lung volume, air bronchogram, and a whiteout lung in severe disease 