This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chronic Kidney Disease & Diabetic Nephropathy, Subject name: Medicine
[{'content': 'Which of the following describes a CKD patient mentioned as G4 A2? \nSelect and explain. \nA. GFR between 15-29 ml/min/1.73 m2 and albumin creatinine ratio of 30-300 mg/g, B. GFR between 30-44 ml/min/1.73 m2 and albumin creatinine ratio of 30-300 mg/g, C. GFR between 45- 59 ml/min/1.73 m2 and albumin creatinine ratio of 3-30 mg/g, D. GFR between 60-89 ml/min/1.73 m2 and albumin creatinine ratio of 3-30 mg/g', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Grades of Kidney Malfunction GFR 1 > 90 ml/ min / 1.73 m2 2 60 - 89 ml 3 30 - 59 ml 4 15 - 29 ml 5 < 15 ml Albuminuria A1 3-30 mg/g A2 30-300 A3 > 300', 'role': 'assistant'}]