This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hepatic encephalopathy & hepatic failure, Subject name: Medicine
[{'content': "Most specific indicator of liver injury? \nSelect and explain. \nA. ALT, B. AST, C. SAP, D. 5' nucleotidase", 'role': 'user'}, {'content': "Answer: A \nExplanation: Most specific indicator of liver injury is: ALT: SGPT (product present in cytosol that come in blood due to injury) AST: SGOT, present in cardiac tissue/liver so it's not specific SAP: (Cholestasis marker) Do not indicate hepatocyte necrosis 5' nucleotidase: Cholestasis marker", 'role': 'assistant'}]