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
An expiratory film is particularly useful to detect 
Select and explain. 
A. Pleuraleffusion, B. Pneumothorax, C. Pulmonary edema, D. Pulmonary infarct
B: Pneumothorax
Answer: B: Pneumothorax 
Explanation: Best view for Pneumothorax - PA view in full expiration.