∞The z-transform of time functionδ(n – k) is—k =

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_∞
The z-transform of time function δ(n – k) is—
^{k = 0}

1. z – 1
  z
2. z
  (z – 1)²
3. z
  z – 1
4. (z – 1)²
  z

Correct Option: C

	_∞
Since, the value of		δ(n – k) = 1
	^{k = 0}

Therefore, 1.u(n) ←z→	z
	z – 1