Each General Statement Is Followed by Several Examples

Each general statement is followed by several examples. Select the letter of the example that does not clearly illustrate the generalization.
-Thanks to vaccines, we have eliminated some terrible, life-threatening diseases.

A) The polio vaccine has virtually eradicated that disease in the West.
B) Before the 1960s, smallpox killed about 2 million people a year, but the smallpox vaccine got rid of the disease.
C) Researchers still hope to perfect a vaccine against the deadly virus that causes HIV and AIDS.
D) For the children in the United States, a vaccine has eliminated whooping cough (pertussis) .