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
Prozone phenomenon is seen with- 
Select and explain. 
A. Same concentration of antibody and antigen, B. In antigen excess to antibody, C. Antibody excess to antigen, D. Hyperimmune reaction
C: Antibody excess to antigen
Answer: C: Antibody excess to antigen 
Explanation: None