The function h is defined by h(ac) = x2-7 Which of the x-3 following statements must be true? A lim h(x) = -co and lim h(a) = -co x-3 lim h(x) = too and lim h(a) = -0o x -> 3 + C lim h(x) = -co and lim h(x) = too x-3 x-3+ D lim h(xx) = too and lim h(x) = too x-3