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
Pneumatocele is commonest in: 
Select and explain. 
A. Pneumococcal pneumonia, B. Staphylococcal pneumonia, C. H. influenzae pneumonia, D. Viral pneumonia
B: Staphylococcal pneumonia
Answer: B: Staphylococcal pneumonia 
Explanation: Staphylococcal pneumonia