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: Microbiology
[{'content': 'Markers of acute viral hepatitis caused by HBV \nSelect and explain. \nA. IgM anti HBc Ag, B. IgG anti HBc Ag, C. IgM anti Hbs Ag, D. IgG anti HBs Ag', 'role': 'user'}, {'content': 'Answer: A \nExplanation: In acute hepatitis following serological markers are present:\n\nHBs Ag\nIg M anti HBc Ag (in recent infection) or IgG anti HBc Ag (in remote infection).\nHbe Ag (with high infectivity) or Anti Hbe Ag (with low infectivity).', 'role': 'assistant'}]