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Which one of the following statements is NOT TRUE for a continuous time causal and stable LTI system?

- All the poles of the system must lie on the left side of the $j\omega$ axis
- Zeros of the system can lie anywhere in the $s$-plane
- All the poles must lie within $\mid s \mid =1$
- All the roots of the characteristic equation must be located on the left side of the $j\omega$ axis