This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Liver, Subject name: Surgery
[{'content': 'OKUDA staging is for? \nSelect and explain. \nA. HCC, B. Pancreatic cancer, C. Hepatoblastoma, D. RCC', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) HCCRef: Sabiston 19th Edition Page 1256* Classification systems used in HCC:# OKUDA staging# Barcelona Clinic Liver Clinic (BCLC) staging# CLIP staging (Cancer of Liver Italian Group Staging)', 'role': 'assistant'}]