The electrical system shown in the figure converts input source current is(t) to output voltage v0(t).Current iL(t) in the inductor and voltage vc(t) acros the capacitor are taken as the state variables, both assumed to be initially equal to zero, i.e., iL(0) = 0 and vc(0) = 0. Then system is

• A. neither state controllable nor observable
• B. completely state controllable as well as completely observable
• C. completely observable but not state controllable
• D. completely state controllable but not observable