This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'A 22 year old G2 P1 presents with rupture of membranes at 19 weeks. She subsequently delivers. Which of the following is seen in autopsy of lungs of nonviable fetus \nSelect and explain. \nA. No cartilage development, B. Terminal sacs present, C. Normal bronchial branching, D. Mature alveoli', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lung maturation stages:\n\nPseudo glandular stage  : growth of intersegmental bronchial tree.\nCanalicular stage  : Bronchial cartilage plates extend peripherally.\nTerminal sac stage  : Respiratory bronchioles gives rise to terminal sacs.\nAlveolar stage  : alveolar epithelial lining thins to improve gas exhange.', 'role': 'assistant'}]