This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Plain Film Radiography, Fluoroscopy, and Tomosynthesis, Subject name: Radiology
[{'content': 'Chest X-ray, most common view is - \nSelect and explain. \nA. AP, B. PA, C. RAO, D. LAO', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. is \'b\' i.e., PA o Posteroanterior view of the chest is most commonly used view for chest X-ray."The best view of the chest is the postero-anterior view with the patient standing and lung fully expanded"--Toriano', 'role': 'assistant'}]