A Vaccine-Preventable Disease Could Become Extinct If Everyone Got Vaccinated

A vaccine-preventable disease could become extinct if everyone got vaccinated for it because

A) there would be no available human hosts in whom it might thrive and from whom it might spread
B) actually, diseases (the germs that cause them) never become extinct
C) they would develop innate immunity to the disease
D) vaccination works by killing germs or pathogens
E) vaccination creates transmembrane conductance regulators in the body, which can shut down targeted pathogens/germs