In the following pick out the time-invariant systems.

1.	In the following pick out the time-invariant systems.
A.	(i) and (iii)
B.	(i) and (ii)
C.	(ii) and (iii)
D.	(i) only
Answer» B. (i) and (ii)

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In the following pick out the time-invariant systems.

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