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
Acute Hepatitis can be earliest diagnosed by - 
Select and explain. 
A. IgM anti HBc ab, B. Hbs Ag, C. IgG anti HBc abs, D. Anti HBs ab
A: IgM anti HBc ab
Answer: A: IgM anti HBc ab 
Explanation: None