The z-transform of a discrete-time signal given below will be:
\(x\left( n \right) = \mathop \sum \limits_{K = 0}^\infty {a^K}\delta \left[ {n - 5K} \right]\)
1
\(\frac{z}{{{z^5} - a}}\)
2
\(\frac{{{z^5}}}{{z - a}}\)
3
\(\frac{{{z^5}}}{{{z^5} - a}}\)
4
\(\frac{{{z^4}}}{{{z^5} - a}}\)