In Terms of Population Dynamics, What Is "Boom-And-Bust" Cycling

In terms of population dynamics, what is "boom-and-bust" cycling?

A) a situation in which a population moves back and forth between rapid growth and decline
B) a situation in which a growing population overshoots the carrying capacity of its environment and experiences a crash before stabilizing
C) a situation in which the sex ratio in a population shows repeated oscillations
D) a situation in which the populations of a predator species and a prey species oscillate in unison