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: Unknown
[{'content': 'All of the following are indirect radiologic signs of collapse of lung EXCEPT- \nSelect and explain. \nA. Mediastinal displacement, B. Hilar displacement, C. Rib Crowding, D. Obscured Contralateral hemidiaphragm', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans- D. Obscured Contralateral hemidiaphragm Correct statement- Obscured ipsilateral hemidiaphragm', 'role': 'assistant'}]