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
[{'content': 'Cause for pneumatoceles \nSelect and explain. \nA. Staph.aureus, B. P.carini, C. H.influenzae, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Pneumatoceles an\xa0thin - walled, gas - filled cystic lung spaces.\nCauses :\nS.aureus (infants & children).\nP.carini (AIDS).\nH.influenzae & E - coli (Neonate).', 'role': 'assistant'}]