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: Physiology
Organism causing otitis externa includes all except 
Select and explain. 
A. Escherichia coli, B. Candida albicans, C. Streptococcus pyogenes, D. Staphylococcus aureus
C: Streptococcus pyogenes
Answer: C: Streptococcus pyogenes 
Explanation: Some Causes of Otitis Externa a. Staphylococcus aureus b. Pseudomonas pyocyaneus c. B. proteus d. Escherichia coli e. Aspergillus niger f. Aspergillus fumigatus g. Candida albicans h. Herpes zoster