Consider a unity feedback system shown below
If G(s) has 5 left half s-plane (LHP) poles, 4 LHP zeroes and 1 right half s-plane (RHP) zero,
then
1
The closed-loop system is stable for all large values of K.
2
The closed-loop system is stable for all small values of K.
3
The closed-loop system is stable for all positive values of K.
4
The closed-loop system is stable for all values of K.