In the circuit shown below, the knee current of the ideal Zener diode is $10$ $mA$. To maintain $5$ $V$ across $R_L$ minimum value of $R_L$ in $\Omega$ and the minimum power rating of the Zener diode in $mW$
respectively are
- $125$ and $125$
- $125$ and $250$
- $250$ and $125$
- $250$ and $250$