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': 'Tumour marker of Hepatocellular carcinoma ? \nSelect and explain. \nA. AFP, B. CEA, C. HCG, D. CA-19', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e. AFP", 'role': 'assistant'}]