The output w n of the system shown in figure is...

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The output w[n] of the system shown in figure is \[\xrightarrow{{x\left[ n \right]}}\boxed{y\left[ n \right] = \sum\limits_{ - \infty }^n {x\left[ k \right]} }\xrightarrow{{y\left[ n \right]}}\boxed{w\left[ n \right] = y\left[ n \right] - y\left[ {n - 1} \right]}\xrightarrow{{w\left[ n \right]}}\]

A. x[n]

B. x[n - 1]

C. x[n] - x[n - 1]

D. \[\frac{1}{2}\] (x[n - 1]) + x[n]

Answer: Option A

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