Find the Critical Point(s) of the Function

Multiple Choice

Find the critical point(s) of the function. Then use the second derivative test to classify the nature of each point, if possible. Finally, determine the relative extrema of the function.

A) (-8, 0.125) is the critical point, the function has neither a relative maximum nor a relative minimum
B) (8, - 0.125) is the critical point, the function has neither a relative maximum nor a relative minimum
C) (8, 0.125) , (8, - 0.125) are the critical points, the function has neither a relative maximum nor a relative minimum
D) (8, 0.125) , (- 8, 0.125) are the critical points, the function has neither a relative maximum nor a relative minimum
E) no critical points