Stability & causality of system by pole/zero of ROC

Q.  When is the system said to be causal as well as stable in accordance to pole/zero of ROC specified by system transfer function?
- Published on 30 Nov 15

a. Only if all the poles of system transfer function lie in left-half of S-plane
b. Only if all the poles of system transfer function lie in right-half of S-plane
c. Only if all the poles of system transfer function lie at the centre of S-plane
d. None of the above

ANSWER: Only if all the poles of system transfer function lie in left-half of S-plane

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