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: March 2004 \nSelect and explain. \nA. Gardenella vaginalis, B. Candida, C. Trichomoniasis, D. Gonorrhoea', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A i.e. Gardenella vaginalis', 'role': 'assistant'}]