This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pneumonia, Subject name: Medicine
[{'content': 'The following X-ray was taken after Staph. aureus pneumonia. Diagnosis is: \nSelect and explain. \nA. Pneumothorax, B. Lung abscess, C. Empyema, D. Increased bronchovascular markings', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pneumatoceles which is a characterstic feature of Staph aureus pneumonia - can rupture and lead to the formation of Pneumothorax(shown in the given X ray)', 'role': 'assistant'}]