( x + 8)2 Let f(X) = Find a) lim f(x), b) lim f(x), and c) lim f(x). x2 - 64 X- - 8 X-0 X-8 a) 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- - 8 O B. The limit does not exist