This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Microbiology
A student has just completed her hepatitis B vaccine series. On reviewing her lab studies, you except 
Select and explain. 
A. Positive test for HBsAg, B. Anti -HBS alone, C. Anti -HBC, D. Antibody against both surface and core antigen
B: Anti -HBS alone
Answer: B: Anti -HBS alone 
Explanation: .