The Largest Interval Over Which F Is Increasing for F(x) $\infty$

Multiple Choice

The largest interval over which f is increasing for f(x) = x⁹ - 5 is

A) (- $\infty$ , -5]
B) [5, $\infty$ )
C) (- $\infty$ , $\infty$ )
D) [-5, $\infty$ )
E) (- $\infty$ , 5]