Evaluate lim f(x) and lim f(x) for the following function. Then give the horizontal asymptote of f (if any). X-+00 X-+ - D0 VX" +729 f(x) = 4x- + 2x#+ 64 Wx +729 lim X-+ - 00 4x + 2x#+64 (Type an exact answer, using radicals as needed.) 9/x' + 729 lim X-+ 00 4x- + 1 2x#+64 (Type an exact answer, using radicals as needed.) Select the correct choice below, and, if necessary, fill in the answer box to complete your choice. O A. The function has a horizontal asymptote at y = (Type an exact answer, using radicals as needed.) O B. The function has no horizontal asymptote