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': 'Breath sounds are decreased in following except \nSelect and explain. \nA. Lobar pneumonia, B. Pneumothorax, C. Pleural effusion, D. Atelectasis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Answer- A. Lobar pneumonia', 'role': 'assistant'}]