Scientific Study of the Population Cycles of the Snowshoe Hare

Scientific study of the population cycles of the snowshoe hare and its predator, the lynx, has revealed that

A) the prey population is controlled by predators alone.
B) hares and lynx are so mutually dependent that each species cannot survive without the other.
C) hare populations would probably not cycle in the Canadian north if predators were not present.
D) both hare and lynx populations are regulated mainly by abiotic factors.
E) the hare population is r-selected and the lynx population is K-selected.