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
OKUDA staging is for? 
Select and explain. 
A. HCC, B. Pancreatic cancer, C. Hepatoblastoma, D. RCC
A: HCC
Answer: A: HCC 
Explanation: 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)