Let $X(z)=\frac{1}{1-z^{-3}}$ be the Z-transform of a causal signal $x[n]$ Then, the values of
$x[2]$ and $x[3]$ are

1. $0$ and $0$
2. $0$ and $1$
3. $1$ and $0$
4. $1$ and $1$

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