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
[{'content': 'Organism causing otitis externa includes all except \nSelect and explain. \nA. Escherichia coli, B. Candida albicans, C. Streptococcus pyogenes, D. Staphylococcus aureus', 'role': 'user'}, {'content': 'Answer: C \nExplanation: 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', 'role': 'assistant'}]