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: Radiology
[{'content': 'Best view to diagnose pneumothorax – \nSelect and explain. \nA. Lateral oblique, B. PA view in full expiration, C. PA view in full inspiration, D. AP view in full expiration', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Usual chest X-ray is PA view in full inspiration. For pneumothorax PA view in full expiration is the most appropriate view.', 'role': 'assistant'}]