The loop transfer function of a negative feedback system is $G(s)H(s)=\frac{1}{s(s-2)}$. The Nyquist plot for the above system _________.
- encircles $(-1+j0)$ point once in the clockwise direction
- encircles $(-1+j0)$ point once in the counterclockwise direction
- does not encircles $(-1+j0)$ point
- encircles $(-1+j0)$ point twice in the counterclockwise direction