This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Pediatrics
An infant presented to OPD with features of respiratory distress. The X-ray is shown below. The most probable organism is 
Select and explain. 
A. S. aureus, B. S. pyogenes, C. Klebsiella, D. E.coli
A: S. aureus
Answer: A: S. aureus 
Explanation: Staphylococcus aureus is the most dangerous of all of the many commonstaphylococcal bacteria. ... These bacteria are spread by having direct contact with an infected person, by using a contaminated object, or by inhaling infected droplets dispersed by sneezing or coughing. Ref essential paediatrics :op ghai 9e