This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Pediatrics
[{'content': 'In a 32 weeks preterm baby the X ray showed diffuse opacities bilaterally. The diagnosis is \nSelect and explain. \nA. Congenital cystic lungs, B. RDS, C. Diaphragmatic hernia, D. Tracheoesophageal fistula', 'role': 'user'}, {'content': 'Answer: B \nExplanation: (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', 'role': 'assistant'}]