This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Vigina, Subject name: Gynaecology & Obstetrics
[{'content': 'The angle of anteflexion occurs at the level of: \nSelect and explain. \nA. Internal os, B. External os, C. Upper vagina, D. Cervix', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ref: Shaw's textbook of gynaecology, 15th ed. pg :8Explanation:The body of I he uterus is bent forwards on the cervix approximately at the level of internal os.This forward inclination of the uterus on the cervix constitutes ante flexion.", 'role': 'assistant'}]