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': 'What is the maximum radiation dose to point A for early and advanced Ca cervix? \nSelect and explain. \nA. 80-85 and 85-90 gy., B. 85-90 and 90-95 gy, C. 75-80 and 80-85 gy, D. 70-75 and 75-80 gy', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. 80-85 and 85-90 gy', 'role': 'assistant'}]