For function f(x), which pair of limits would verify the existence of a vertical asymptote at x = -1? O lim f(x) = co and lim f(x) = 0o x - -1 x - -1 O lim f(x) = - 1 and lim f(x) = - 1 x - - 00 x -+ DO O lim f(x) = c and lim f(x) = c for some value c x - -1 x - -1+ O lim f(x) = - 1 and lim f(x) = - 1 for come value c X -c" x-c+