This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: G.I.T, Subject name: Anatomy
[{'content': 'Okuda staging contains all except \nSelect and explain. \nA. Bilirubin, B. Tumor size, C. Ascites, D. AFP', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Okuda staging Clinical parameter Cutoff value points Serum bilirubin <3 >3 0 1 Serun Albumin >3 <3 0 1 Tumor size <50% >50% 0 1 Ascites Absent Present 0 1 Stage I= 01; Stage II = 1-2 points ; Stage III = 3-4 points :', 'role': 'assistant'}]