The bacterium that causes tetanus releases a toxin which functions as an antigen. The graph shows the concentration of an antibody in the blood of two people, G and H. On day $0$, G was given antibodies to the tetanus toxin and H was given the tetanus vaccine. What would be the outcome after G and H were infected with the tetanus bacteria on day $20$?
- Aconcentration of antibodies in H would remain constant
- BG would fail to produce tetanus antibodies
- CG would peak in antibody production $12$ days after infection
- DH would produce a new antibody peak $12$ days after infection