An Introduced Insect Is Devastating Several Related Plant Species Within

An introduced insect is devastating several related plant species within a diverse natural area.An environmental manager is tasked with developing and preserving the area.He decides to use a biological control method, a parasitic fly that feeds on the pest insect's larvae.Would this be considered a density-dependent or a density-independent approach to population control?

A) Density-independent, because both pest and biological control agent are introduced
B) Density-independent, because it is not likely to completely control the pest's density
C) Density-independent, because the parasite could become a pest, causing a natural disaster
D) Density-dependent, because it reduces the population density of the pest
E) Density-dependent, because both pest and biological control agent are introduced