The population of wolves in a wildlife reserve can be modelled by the function f(x) = (1000 + 600x)/(10 + 0.6x), where f(x) is the population of wolves, and x is the number of years since the population was introduced. In the context of this model, what does the vertical asymptote represent?(a) Nothing; the vertical asymptotes are irrelevant in all contexts.(b) Nothing; the vertical asymptote is outside the domain.(c) The maximum number of wolves that can survive in the reserve at any given time.(d) The time at which the wolves began living in the reserve.