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The electrical system shown in the figure converts input source current $i_{s}(t)$ to output voltage $v_{o}(t)$

Current i $i_{L}(t)$ in the inductor and voltage $v_{c}(t)$ across the capacitor are taken as the state variables, both assumed to be initially equal to zero, i.e., $i_{L}(0) =0$ and $v_{c}(0)=0$. The system is

- completely state controllable as well as completely observable
- completely state controllable but not observable
- completely observable but not state controllable
- neither state controllable nor observable