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: Microbiology
[{'content': 'The Most common cause of Mycotic aneuryms is \nSelect and explain. \nA. Candida albicans, B. Treponema pallidum, C. Staphylococcus aureus, D. Pseudomonas aeruginosa', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Primary infection of the aoic wall results in aneurysm formation termed mycotic aneurysms, the pathogens usually are bacteria, most common being Staphylococcus aureus, Staphylococcus epidermidis, Salmonella, and Streptococcus', 'role': 'assistant'}]