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: Gynaecology & Obstetrics
[{'content': "'Clue cells' are seen in: \nSelect and explain. \nA. Bacterial vaginosis, B. Vaginal Candidiasis, C. Chlamydial vaginosis, D. Trichomoniasis", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clue cells are epethelial cells covered with bacteria and are identified on microscopy. They are characteristic of Bacterial Vaginosis. Ref: Clinical Obstetrics and Gynaecology by Brian A. Magowan, Philip Owen, James Drife, Pages 125-134.', 'role': 'assistant'}]