This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Gynaecology & Obstetrics
[{'content': 'The normal range of AFI is \nSelect and explain. \nA. 2 to 8cm, B. 5 to 8cm, C. 2 to 24cm, D. 5 to 24cm', 'role': 'user'}, {'content': "Answer: D \nExplanation: AFI : It is the sum of the single deepest pocket from four quadrants of the uterus. Normal range: 5 to 24cm(Ref: William's Obstetrics; 25th edition)", 'role': 'assistant'}]