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: Medicine
[{'content': 'A young boy, Hod Lai, developed respiratory distress. On examination, the chest X-ray showed hyperinflation of one lung. Which of the following is the most possible diagnosis: \nSelect and explain. \nA. Congenital lobar emphysema, B. Foreign body aspiration, C. Bronchiectasis, D. Atelectasis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]