Find All Relative Extrema of the Function $f ( x ) = x ^ { 8 / 9 } - 8$

Multiple Choice

Find all relative extrema of the function $f ( x ) = x ^ { 8 / 9 } - 8$ . Use the Second Derivative Test where applicable.

A) relative max: f(1) = -7
B) relative min: f(0) = -8
C) no relative max or min
D) both A and B
E) none of the above