Which statement concerning the immune system is correct?
- AA pathogen has its own antigens which will have the same shape as antibodies that bind to them.
- BAntigens stimulate an immune response by phagocytes which produce antibodies.
- CActive immunity involves acquiring antibodies from another individual and provides short-term protection against a pathogen.
- DAntibodies are protein molecules that bind to antigens either leading to the destruction of pathogens or marking a pathogen for destruction by lymphocytes.