A single-input single-output feedback system has forward transfer function $G(s)$ and feedback transfer function $H(s)$. It is given that $|G(s)H(s)|< 1$ . Which of the following is true about the stability of the system?
2. The system is stable if all zeros of $G(s)H(s)$ are in left half of the s-plane
3. The system is stable if all poles of $G(s)H(s)$  are in left half of the s-plane