This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory infections, Subject name: Pediatrics
A child with pneumonia shows the following chest X-ray. Which of the following could be the most common underlying causative organism? 
Select and explain. 
A. Mycobacterium tuberculosis, B. Hemophilus influenza, C. Streptococcus pneumoniae, D. Staphylococcus aureus
D: Staphylococcus aureus
Answer: D: Staphylococcus aureus 
Explanation: * CXR shows consolidation in lung fields with pneumatocele: seen in Staphylococcal pneumonia