So, if the birthrate and the death rate are the same, that means that for every person that gets born, one person dies: so the number of people would stay constant. This means that the growth rate is actually 0%.
Invasive firestorm method. All pests are now dead with the added benefit of fewer trees to infest.
I think it would be either A or B but I am not sure.... If anything I think I would go with A.
Hope this helps