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: Medicine
A serum of patient shows HbsAg and IgM to Hbc. He is diagnosed to have: 
Select and explain. 
A. Chronic hepatitis, B. Acute hepatitis, C. Acute infection of hepatitis C, D. Chronic infection of hepatitis B
B: Acute hepatitis
Answer: B: Acute hepatitis 
Explanation: None