Korpimaki and Norrdahl's Research on Voles (Prey) and Kestrels and Owls

Multiple Choice

Korpimaki and Norrdahl's research on voles (prey) and kestrels and owls (predators) suggest that the predator's population dynamics are

A) a functional response.
B) a numerical response.
C) in response to vole densities.
D) both a functional response and a numerical response.
E) both a numerical response and in response to vole densities.