This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Maternal Anatomy and Physiology, Subject name: Gynaecology & Obstetrics
[{'content': "Baholin's duct opens into the: \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: Baholin's glands Two pea sized glands located slightly posterior to and to left and right of the vaginal opening Homologous to bulbourethral glands in males Located in superficial perineal pouch The ducts opens into the navicular fossa, external to the hymen, on the inner side of labium minora Baholin's glands secrete mucus to provide lubrication during the sexual act.", 'role': 'assistant'}]