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: Radiology
[{'content': 'Point A and point B Manchester location are important for treatment of which cancer – \nSelect and explain. \nA. Cervix, B. Vagina, C. Ovary, D. Uterus', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Radiotherapy in Ca cervix\n\nExternal beam via cobalt or linear accelerator and brachytherapy (e.g. radium, cobalt or cesium) are used in treatment of carcinoma cervix.\nThe radiation dose is calculated with respect to the amount of irradiation received at 2 theoretical points, A & B.', 'role': 'assistant'}]