Determine the intervals on which the function $h$ is increasing or decreasing given its derivative $h^{\prime }\left(x\right)=1-\frac{25}{x^2}$, $x\ne 0$.

Increasing on: $(-5,0)\(\cup\)(0,\(\infty\))$

Decreasing on: $(-\(\infty\),-5)$

Increasing on: $(-\infty ,-5)$

Decreasing on: $(-5,0)\cup (0,\infty )$

Increasing on: $(-\(\infty\),-5)\(\cup\)(5,\(\infty\))$

Decreasing on: $(-5,0)\(\cup\)(0,5)$

Increasing on: $(-5,0)\(\cup\)(0,5)$

Decreasing on: $(-\(\infty\),-5)\(\cup\)(5,\(\infty\))$