14. [-/1 Points] DETAILS 0/100 Submissions Used Find the relative extrema of the function f(x) = 3x5 - 80x3 + 35. O relative maximum at x = -4 and x = 4; relative minimum at x = 0. O relative maximum at x = 4; relative minimum at x = -4. O relative maximum at x = -4; relative minimum at x = 4. O relative maximum at x = 0; relative minimum at x = -4 and x = 4. O no relative maximum; relative minimum at x = 0