3x2 - 8x - 3 Let f(x) = Find the indicated quantities, if they exist. x2 + 4x-21 (A) lim f(x) (B) lim f(x) (C) lim f(x) X-+3 X-+0 X-+1 . . . (A) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. 3x2 - 8x - 3 lim (Type an integer or a simplified fraction.) X-3X" + 4x - 21 O B. The limit does not exist. (B) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. 3x2- 8x - 3 lim = (Type an integer or a simplified fraction.) x-0x +4x -21 O B. The limit does not exist. (C) Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. 3x2- 8x - 3 lim (Type an integer or a simplified fraction.) X-1x +4x -21 O B. The limit does not exist