Every Year the Common Flu Vaccine Is Designed to Protect

Every year the common flu vaccine is designed to protect against three different strains of the influenza virus.How is your body able to raise antibodies against so many new forms of the flu virus?

A) Each B cell can make antibodies against all antigens.
B) The vaccine contains the antibodies against the strains of flu virus so your body does not need to make them.
C) Viruses are destroyed by the passive immune system.
D) Clonal deletion of B and T cells that recognize the virus occurs.
E) Recombination of the gene used to make antibodies occurs.