A single phase fully controlled rectifier is supplying a load with an anti-parallel diode as shown in the figure. All switches and diodes are ideal. Which one of the following is true for instantaneous load voltage and current?
- $v_o \geq 0$ & $i_o<0$
- $v_o < 0$ & $i_o <0$
- $v_o \geq 0$ & $i_o \geq 0$
- $v_0 < 0$ & $i_o\geq 0$