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': 'Normal commensal in female genital tract ? \nSelect and explain. \nA. Gardenella vaginalis, B. Bifidobacter, C. Proteus, D. Neisseria', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is `a' i.e., Gardenella vaginalis Resident commonsal in Vagina are lactobacillus, streptococcus, prevotella, coagulase negative staphylococci, Gardenella vaginalis and actinomyces.", 'role': 'assistant'}]