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: Social & Preventive Medicine
Which of the Hepatitis B Virus serological marker indicates the first evidence of Hepatitis B infection? 
Select and explain. 
A. Anti-HBs, B. Anti-HBc, C. HBeAg, D. HBsAg
D: HBsAg
Answer: D: HBsAg 
Explanation: None