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The time domain behavior of an $R L$ circuit is represented by
$L \frac{d i}{d t}+R i=V_{o}\left(1+B e^{-R t / L} \sin t\right) u(t).$
For an initial current of $i(0)=\frac{V_{o}}{R}$, the steady state value of the current is given by

1. $i(t) \rightarrow \frac{V_{0}}{R}$
2. $i(t) \rightarrow \frac{2 V_{0}}{R}$
3. $i(t) \rightarrow \frac{V_{0}}{R}(1+B)$
4. $i(t) \rightarrow \frac{2 V_{0}}{R}(1+B)$