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': 'The screening for HCC in chronic liver disease is: \nSelect and explain. \nA. Serial USG+AFP, B. Serial LFT+AFP, C. Serial LFT+CT scan, D. Serial USG+ serial LFT', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Screening in high risk cases is done with Serial USG+AFP .', 'role': 'assistant'}]