Let $f$ be defined as $f(x)=\{\begin{array}{ccc}-x^2-3& if& x<mn>0</mn>\\ x^2-2& if& x>0\\ 2& if& x=0\end{array}$

The value of $\underset{x{0}^{+}}{lim}f(x)$ is

$-2$

$0$

$2$

does not exist