The region of convergence of a causal finite duration discrete-time signal is
(a) The entire z-plane except z = 0
(b) The entire z-plane except z = ∞
(c) The entire z-plane
(d) A strip in z-plane enclosing jω–axis
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My question is based upon The Z-transform Analysis of Sampled-Data Control Systems topic in division Digital Control Systems of Control Systems