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
[{'content': 'Common natural flora of skin are -a) Streptococcusb) Staphylococcus aureusc) Candida albicansd) Bacteroides fragilise) Propionibacterium acnes \nSelect and explain. \nA. bcde, B. abcd, C. acde, D. abce', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]