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: Microbiology
Staphylococcus aureus does not cause which of the following skin infection: 
Select and explain. 
A. Ecthyma gangrenosum, B. Bullous impetigo, C. Botryomycosis, D. Cellulitis
A: Ecthyma gangrenosum
Answer: A: Ecthyma gangrenosum 
Explanation: Ans. is. a. Ecthyma gangrenosum