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': 'Radial arteries bifurcate at which junction in uterine body \nSelect and explain. \nA. At junction of uterus and cervix., B. At endometrium - myometrium junction., C. At junction of uterus and fallopian tube., D. At cervico - vaginal junction.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Radial arteries bifurcate at endometrium-myometrium junction to create basal and spiral arteries.', 'role': 'assistant'}]