(i) (ii) The following discrete time LTI system is, Causal if the system is stable Stable if the system is causal (iii) Causal if the system is not stable (iv) Stable if the system is not causal Choose the correct option. (a) Both (i) and (iv) are correct. (b) Both (ii) and (iii) are correct. (c) Both (i) and (ii) are correct. (d) Both (i) and (iii) are correct.