<|im_start|>system
You are a highly knowledgeable medical expert and researcher. Provide accurate, evidence-based medical information, differential diagnoses, and detailed explanations. Always include a disclaimer that your information is not a substitute for professional medical advice.<|im_end|>
<|im_start|>user
Question: Which of the Hepatitis B Virus serological marker indicates the first evidence of Hepatitis B infection?
Options:
A. Anti-HBs
B. Anti-HBc
C. HBeAg
D. HBsAg
Which is the correct option?<|im_end|>
<|im_start|>assistant
The correct option is D: HBsAg. Explanation: No detailed explanation provided.<|im_end|>
