Find all points of discontinuity of $f$, where $f$ is defined by $f(x) = \left\{ \begin{array} {1 1} \large \frac x { |\;x\;| },& \quad\text{ if \(x\) < 0 }\\ -1 ,& \quad \text{if $x$ \( \geq 0\)}\\ \end{array} \right.$

Question

$\begin{array}{1 1} \text{The point of discontinuity for this function is x=0} \\\text{There is no point of discontinuity for this function in its domain} \\ \text{ The point of discontinuity for this function is x=1} \\ \text{ The point of discontinuity for this function is x=-1}\end{array}$