Penn et al.(2000)and Lacy (1993)used a population viability analysis (PVA)to investigate whether two populations of koalas were declining in Queensland.Which of the following is true regarding this study?

A) The model showed that both populations had a similar probability of extinction
B) The predictions of their PVA were able to be checked for accuracy because researchers had tracked the populations since the 1970s
C) The one population was experiencing an inbreeding depression
D) The PVA predictions were similar to the actual population trends