In the circuit shown below, the key K is closed at t=0 . The...

Options

1. A$\frac{\mathrm{VR}_1 \mathrm{R}_2}{\sqrt{\mathrm{R}_1^2+\mathrm{R}_2^2}}$ at $\mathrm{t}=0$ and $\frac{\mathrm{V}}{\mathrm{R}_2}$ at $\mathrm{t}=\infty$
2. B$\frac{V}{R_2}$ at $t=0$ and $\frac{V\left(R_1+R_2\right)}{R_1 R_2}$ at $t=\infty$
3. C$\frac{V}{R_2}$ at $t=0$ and $\frac{V R_1 R_2}{\sqrt{R_1^2+R_2^2}}$ at $t=\infty$
4. D$\frac{V\left(R_1+R_2\right)}{R_1 R_2}$ at $t=0$ and $\frac{V}{R_2}$ at $t=\infty$