Find the relative extrema of the function, if they exist.
f(x)=x^(3)-12x 5
A. Relative maximum at
(5,70)
; relative minimum at
(-3,14)
B. Relative maximum at
(-2,21)
; relative minimum at
(2,-11)
C. Relative minimum at
(-2,21)
; relative maximum at
(2,-11)
D. Relative maximum at
(5,70)
, relative minimum at
(2,-11)