Determine the local maximum and minimum values of f(x) = 3x4-8x-18x +6 using the second derivative test when it applies. a.) Local maximum value is 6 at x = 0. O Local minimum value is -1 at x = - 1. Local minimum value is -129 at x = 3. b.) Local minimum value is 6 at x = 0. O Local maximum value is -1 at x = - 1. Local maximum value is -129 at x = 3. c.) Local minimum value is -1 at x = - 1. O Local minimum value is -129 at x = 3. d.) Local minimum value is 6 at x = 0. O Local maximum value is 48 at X = - 1. Local maximum value is 144 at x = 3