This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Surgery
[{'content': 'Which of the following is a tumor markers for Hepatocellular carcinoma? \nSelect and explain. \nA. AFP, B. CEA, C. HCG, D. CA-125', 'role': 'user'}, {'content': 'Answer: A \nExplanation: AFP is the most impoant tumor marker for HCC. AFP level is elevated in approximately 70% of individuals in Asian countries bearing HCC and 50% of patients in US and Europe. Ref: Sabiston 18/e, Page 582; CSDT 13/e, Page 519.', 'role': 'assistant'}]