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': "Baholin's duct opens into the: March 2004 \nSelect and explain. \nA. Upper pa of vagina, B. Lower and posterior fornix of vagina, C. External to the hymen, on the inner side of labium minora, D. Urethra", 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. C i.e. External to the hymen, on the inner side of labium minora', 'role': 'assistant'}]