Which of These Interactions Does Not Represent a Typical Parasite-Host

Multiple Choice

Which of these interactions does not represent a typical parasite-host interaction?

A) A virus is transmitted by mosquitoes and causes a nonfatal disease in humans.
B) Leeches attach to a boy swimming in a pond; he removes them as quickly as possible.
C) Tapeworms become established in a cat and are transmitted to other cats in the household.
D) A wasp lays eggs in a moth caterpillar; hatched wasps consume and kill the moth caterpillar.
E) The E. coli bacterium lives normally in the human intestine, but when ingested, it causes disease.