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: Pediatrics
[{'content': 'Pneumatocele is caused by- \nSelect and explain. \nA. Staphyococcus, B. Streptococcus, C. Streptococcus pneumoniae, D. All', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Staphylococcus Pneumatoceles o These are multiple thin walled air containing cysts. o Staphylococcus aureus is the most common organism causing pneumatoceles and pneumatoceles are considered pathognomonic of staphylococcal pneumonia. o E.coli and klebsiella pneumonia may have pneumatoceles.", 'role': 'assistant'}]