Which of the Following Is True

Which of the following is True?

A) K-selection operates in populations where populations fluctuate well below the carrying capacity.
B) r-selection occurs in populations whose densities are very near the carrying capacity.
C) Different populations of the same species will be consistently r- or K-selected.
D) r- and K-selection are two extremes of a range of life history strategies.
E) r-selection tends to maximize population size, not the rate of increase in population size.