Q$3.$ Answer the following questions.

A$.$ Explain the effect of reducing the sampling rate to one$-$fourth in the original

Barbara image shown below. What can be the reason of that difference? $(6$

pts$.)$

Aliasing effect occur due to sampling rate below Nyquist rate.

B$.$ Explain and justify the possible filtering operation which provides the

following image by reducing the the effect which is visible in part $($a$).$ For

justification you can use a ID Signal case.