Evaluate lim f(x) and lim f(x) for the following rational function. Use co or - co where appropriate. Then give the horizontal asymptote of f (if any). X-+00 x- - 00 4X - 8x +7 f( x ) = 2x2+1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. lim f(x) = (Simplify your answer.) x-+ 00 O B. The limit does not exist and is neither co nor - co. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. lim f(x) = (Simplify your answer.) X - 00 O B. The limit does not exist and is neither co nor - co. Identify the horizontal asymptote. Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The horizontal asymptote is y =